option D active bone structure is the most apt answer for not limiting range of motion.
what is range of motion?
Range of motion refers to the amount of the distance an individual can travel or distance in an individual can make an object travel.
Example the distance travelled by a person while running.
Given:
possible reasons for limited range of motion-
1- weak muscles
2- age
3- disease
4- active bone structure
Weak muscles play an important role in the range of motion for example a person who is will Trend and has developed muscles can throw any object to a greater distance than a novice whose muscles are not much developed.
Age is also important factor as when age increases the muscles become weak and their food the range of motion decreases.
Disease can also decrease the range of motion for example a person suffering from asthma cannot run a greater distance.
While active bone structure also impacts the range of motion, but it is the most trainable of all the given options therefore active bone structure does not impact much to the range of the motion.
therefore, option D active bone structure is the most apt answer for not imitated range of motion.
learn more about range of motion here:
https://brainly.com/question/16231656
#SPJ13
A cannon fires a cannon ball vertically into the air. Find the initial velocity if the cannon ball reached the height of 4.75 meters.
The initial velocity of the cannon ball when it reached a height of 4.75 m is 9.65 m/s.
What is velocity?Velocity can be defined as the rate of change of displacement.
To calculate the initail velocity of the cannon ball, we use the formula below.
Formula:
v² = u²+2gH......... Equation 1Where:
v = Final velocityu = Initial velocity H = Heightg = Acceleration due to gravity.From the question,
Given:
v = 0 m/s (At the maximum height)H = 4.75 mg = 9.8 m/sSubstitute these values into equation 1
0² = u²+2×9.8×4.75u² = 93.1u = √(93.1)u = 9.65 m/sHence, the initial velocity of the cannon ball is 9.65 m/s.
Learn more about velocity here: https://brainly.com/question/24739297
#SPJ1
A drawing that shows components of a circuit as they would actually appear is called a(n) _________ or ________ drawing.
A drawing that shows components of a circuit as they would actually appear is called a pictorial or schematic drawing.
A schematic drawing representation of circuits can be done to reflect the different components that makes up that circuit. In schematic drawing, symbols and lines are used as connections. These circuit diagrams are the main knowledge behind the design and construction of any electrical and/or electronic appliances.
Schematic diagrams help the electrical and electronic buildup of materials in the following ways:
• It help users to design the whole electrical circuit before building or rebuilding, incases of faults
• It also help to identify the functioning capabilities of a system through the circuits.
• It help engineers to know how different parts of components, work together before designing.
Learn more about circuits here https:
//brainly.com/question/27990887
#SPJ4
Are more wind farms on the coast or inland?
Answer: I think coast (offshore)
Explanation: Offshore wind speeds tend to be faster than on land.
a vessel at rest at the origin of an xy coordinate system explodes into three pieces. just after the explosion, one piece, of mass m, moves with velocity and a second piece, also of mass m, moves with velocity . the third piece has mass 3m. just after the explosion, what are th
Solution:
Our notation (and, implicitly, our choice of coordinate system) is as follows:
the mass of one piece is m1 =m
its velocity is v1 vector = (−30m/s) i^ ;
the mass of the second piece is m2 = m ;
its velocity is ν2 vector = (−30m/s) j^;
and mass of the third piece is m3=3m .
(a) Conservation of linear momentum requires
mν0 vector = m1v1 + m2v2 + m3v3
0=m(−30i )+m(−30j^)+3m ν3 vector
which leads to ν3=(10i^+10 j^)m/s . Its magnitude is v3 = root 2 ≈14m/s .
(b) The direction is 45∘counter clockwise from +x (in this system where we have m1 flying off in the –x direction and m2 flying off in the –y direction) .
Velocity is defined as a vector size of the fee and path of motion. put virtually, speed is the speed at which something actions in a single path. the rate of a vehicle travelling north on a first-rate expressway and the rate a rocket launching into space can both be measured the usage of pace.
Velocity is a noun plural -ties. velocity of motion, movement, or operation; rapidity; swiftness. Physics a measure of the fee of motion of a body expressed as the charge of trade of its function in a specific path with time.
The SI (international) units for velocity are m/s (meters consistent with second), however speed may also be expressed in any gadgets of distance per time. other gadgets consist of miles in keeping with hour (mph), kilometers according to hour (kph), and kilometers in line with 2nd (km/s).
Learn more bout Velocity here :-https://brainly.com/question/500702
#SPJ4
Particles in a warmer block will have ________ kinetic energy and move ______than the particles in the colder block.
Particles in a warmer block will have ________ kinetic energy and move ______than the particles in the colder block.
Particles in a warmer block will have more kinetic energy and travel more quickly than particles in a cooler block.
What exactly is kinetic energy?
The initial energy determines the energy that an object has as a function of motion. It is defined as the effort necessary to move a physical object from rest to the specified velocity.
The kinetic energy of the particles increases with temperature, which causes them to move more swiftly. In gases compared to solids, particles have more kinetic energy.
Particles in a warmer block will therefore possess more kinetic energy and travel more quickly than those in a colder block.
To learn more about kinetic energy go through the given link:https://brainly.com/question/25959744
Group the words or phrases from the word bank according to the type of wave they describe: Waves on the surface of a pond, sound waves, or both. Hint: Use each description in the word bank only once.
The correct word matching of the given waves are:
Water Surface Ripples
Mechanical waveTransverse waveRequires a mediumParticles move at right anglesSound Waves
Mechanical waveParticles move back and forthLongitudinal waveCompressional waveRequires a mediumWhat are longitudinal and transverse waves?Longitudinal waves are waves that the direction of the vibration of the wave is in the same direction of the travel of the particles of the medium.
Example of longitudinal waves are sound waves.
Transverse waves are waves that the direction of the vibration of the wave is perpendicular to the direction of the travel of the particles of the medium.
Example of transverse waves are water waves.
Learn more about longitudinal and transverse waves at: https://brainly.com/question/15531840
#SPJ1
determine the magnitude and location of the resultant of the distributed load. (round the resultant to the nearest whole number and the location to two decimal places.) (you must provide an answer before moving to the next part.) the magnitude of the resultant is n. the location of the resultant x⎯⎯⎯ is m.
The magnitude and location of the resultant of the distributed load is given as
[tex]\bar{x}=3.4545 \mathrm{~m} \quad$[/tex]
This is further explained below.
What is the resultant force?Generally, In the fields of physics and engineering, a resultant force is a single force and related torque that is created by combining a system of forces and torques operating on a rigid body by vector addition. This process yields the single force and associated torque.
[tex]$\sum F_y=0$$F_R=\frac{1}{2} \times(600+1600) \times 6=6600 \mathrm{~N}$\\\\$\sum M_2=0$[/tex]
[tex]$$F_R \times \bar{x}=(600 \times 6) \times\left(\frac{6}{2}\right)+(0.5 \times(1600-600) \times 6) \times\left(\frac{6 \times 2}{3}\right)\\\\$$$6600 \bar{x}=10800+12000$\\\\$\bar{x}=3.4545 \mathrm{~m} \quad$[/tex]
Read more about the resultant force
https://brainly.com/question/16380983
#SPJ1
CQ is attached below
This doesn’t make sense, there is no angle so I can’t use Fnet=mgcos(theta) and can’t find acceleration in a=mgsin(theta).
The magnitude of the net force on the block while it is sliding is 9.8 N.
What is the angle of inclination of the plane?
The angle of inclination of the plane is calculated by applying the principle of trigonometry ratio.
Considering the vertical height (10 m) and length of the incline (20 m);
sin θ = 10 m / 20 m
sin θ = 1/2
sin θ = 0.5
θ = arc sin(0.5)
θ = 30⁰
The magnitude of the net force on the block while it is sliding is calculated as follows;
F(║) = F(net) = mg sinθ
where;
m is mass of the blockg is acceleration due to gravityF(║) implies parallel force, since there is no friction on the inclineF(net) = (2 x 9.8) x sin(30)
F(net) = 9.8 N
Thus, the net force on the block is the parallel component of the weight of the block.
Learn more about net force here: https://brainly.com/question/14361879
#SPJ1
A ball is thrown upwards at 24.39 m/s. What is the maximum height the ball reaches?
Answer:
30.3 m
Explanation:
vf = final velocity = 0 at the apex
vo = original velocity = 24.39 m/s
a = - 9.81 m/s^2
vf = vo + at
0 = 24.39 -9.81 t shows t= 2.486 s
df = final height
df = vo t + 1/2 a t^2
= 24.39( 2.486) + 1/2 ( -9.81)(2.486^2) = 30.3 m
the maximum incline at which sediments on a slope can remain at rest before pulled downward by gravity is known as the .
The maximum incline at which sediments on a slope can remain at rest before being pulled downward by gravity is known as the Weathering
What is friction?Friction is a type of force that resists or prevents the relative motion of two physical objects when their surfaces come in contact.
As given in the problem statement we have to find out the maximum incline at which sediments on a slope can remain at rest before being pulled downward by gravity.
The Weathering Angle is the highest inclination at which sediments on a slope may rest before being dragged down by gravity.
To learn more about friction here, refer to the link given below ;
brainly.com/question/24186853
#SPJ1
A baseball diamond is perfect square with each base being 27.4 meters away from the next. When a catcher has to throw a ball to second base. How far does he have to throw
The distance from the second base to home plate is [tex]27.4\sqrt{2}[/tex] meter
The baseball diamond with each base = 27.4 meters
Formula used:
Pythagorean theorem:
[tex]h^2 = p^2 + b^2[/tex]
Here, h is hypotenuse, b is base, and is p perpendicular.
The distance of second base to home plate is diagonal of the square, and its a hypotenuse and perpendicular and base is 27.4 meter.
[tex]h^2 = p^2 + b^2\\h^2 = 27.4^2 + 27.4^2\\h^2 = 2 \times 27.4^4\\[/tex]
h = ±27.4[tex]\sqrt{2}[/tex]
The distance is always positive, Thus, the distance of second base to home plate is meter. 27.4[tex]\sqrt{2}[/tex]
Explain Pythagorean theorem ?In mathematics, the Pythagorean theorem, or Pythagorean theorem, is the basic relationship between the three sides of a right triangle in Euclidean geometry. It affirms that the area of a square whose side is the hypotenuse (opposite side of a right angle) is equal to the sum of the areas of the squares of the other two sides. This theorem can be written as an equation combining the lengths of the legs a, b and the hypotenuse c, often called the Pythagorean equation
[tex]{\displaystyle a^{2} + b^{2} = c^2[/tex]
The theorem has been proven many times by many different methods - perhaps the most of any mathematical theorem. There are various proofs, including both geometric and algebraic proofs, some dating back thousands of years.
To learn more about Pythagorean theorem, visit;
https://brainly.com/question/11505071
#SPJ10
*PLEASE HELP I BEG* can someone help me turn the position-time graphs into velocity-time graphs.
Answer:
See below
Explanation:
See image with explanation below
a piston–cylinder device contains 4 kg of argon at 250 kpa and 35°c. during a quasi-equilibrium, isothermal expansion process, 15 kj of boundary work is done by the system, and 3 kj of paddle-wheel work is done on the system. determine the heat transfer for this process
Heat transfer for this process is 12KJ.
m= 4 kg
P₁ = 250 KPa
T₁ = 35⁰C = 308 K
Work done by the system ,W₁= 15 KJ
Work is done on the system W₂ = - 3 KJ =
Since isothermal expansion is taking place, that's why temperature of the gas will remain constant.
Isothermal expansion is a kind of expansion process occurring at a constant temperature.
As we know that the internal energy of the ideal gas depends only on the temperature of the gas, so the change in the internal energy of the gas will be zero because change in the temperature is zero.
According to the first law of thermodynamics
Q = W + ΔU
Q= Heat ,
W = Net Work ,
ΔU = Change in the internal energy
Here ΔU = 0
Q= W
Q = W₁ + W₂
Q= 15 - 3 KJ
Q= 12 KJ
The heat transfer for this process is 12 KJ.
To know more about isothermal expansion,
https://brainly.com/question/14071096
#SPJ1
as demands for electricity push the limits of existing electric-power-generating plants in the united states, when is it most likely that a brown-out or blackout will disrupt electricity to your home computer?
A brown-out or blackout on a workday in the summer is most likely to affect power to home computers.
On a weekday in the summer, blackouts or brownouts occur because when temperatures reach 90 degrees Fahrenheit every day, there is increased consumption of air conditioners, which overloads the electricity grid, resulting in a power outage. Power outages in hot weather may be unpleasant, inconvenient, and sometimes hazardous, particularly for children and the elderly.
A blackout is a full loss of power in a specific service region. Rolling blackouts are planned and managed service outages. A brownout is a brief, partial decrease in system voltage or overall system capacity.
Read more about brown-outs or blackouts during summer in the US at
https://brainly.com/question/28168490?referrer=searchResults
#SPJ4
which object gives off the greatest intensity of blue light?
Object having shorter wavelength or higher frequency gives off the greatest intensity of blue light because it strongly scattered the light.
What is Light?Light is the electromagnetic radiation having wavelengths between 380 and 750 nm that makes visible to human eyes. Electromagnetic radiation are radio, microwave, infrared, visible light, ultraviolet, X-rays and gamma rays in the terms of wavelengths. The Sun is the main source of the light.
Light travels in a straight line whose speed is faster than the speed of sound. The speed of light is 3 x [tex]10^8[/tex] m/s.
Light energy is of various types. They are:
1. Visible light
2. Infrared light
3. X-rays and Ultraviolet light
Characteristics of light are as follows:
1. Direction
2. Intensity
3. Color
4. Contrast
5. Hardness
Thus, object having shorter wavelength or higher frequency gives off the greatest intensity of blue light because it strongly scattered the light.
Learn more about Light, here:
https://brainly.com/question/15200315
#SPJ12
is an essential nutrient that makes up more than 50 percent of your body weight
Answer:water
Explanation:
Water may be a nutrient that makes up 60% of our body weight. it's important in many functions, it's part of every cell in every tissue in the body.
Water carries other nutrients to all or any parts of the body, it carries waste out of the body and it helps to manage body temperature. When you run or play sports your body heats up pretty quickly.
Your body starts to sweat as a way to get rid of the heat. When the sweat evaporates on your skin your body and blood get cool. it's very important to replace the fluid that is lost by sweating so as not to become dehydrated.
If you get dehydrated the body cannot cool itself anymore and your performance will drop. Without enough water, whether you're exercising or sitting all day, you're at risk for dehydration which can be fatal
Learn more about essential nutrients at:https://brainly.com/question/28901805
Which option gives an object’s mass in si units?
Answer:
B
Explanation:
Kilograms are SI units! Hope this helps :)
Answer:
b im pretty sure
bc of kilogram
HELP 2. How do the positions of the particles in a solid compare with the positions of the particles
in an equal volume of liquid?
The particles of a solid have fewer options available to them than the particles of the same molecules in a liquid.
Because the interactions between particles are stronger in a solid, there are fewer ways that they can move around, and this limits their freedom to change position.
In a liquid, there is no boundary. The amount of fluid you have depends on the container and the size of your container; the more surface area you have, the more fluid there is. The only way to define the boundaries of a solid is by using a mathematical formula.
For example, if you stand at the bottom of a cliff, then drop something off it, making for another particle of equal size which is placed at some random point on the cliff (this is not obvious), then what you will find at the end of your experiment is that it is less probable that there will be one particle in front of the second one than it would be if an equal volume of liquid was present instead.
To learn more about solids and liquids visit: https://brainly.com/question/13940489
In the circuit shown, the resistors are connected in parallel.(a) Find the equivalent resistance of the two resistors.(b) Find I 1
Given:
R1 = 56Ω
R2 = 8 Ω
Give that the resistors are i
The motion of an object can be described by its speed direction
The motion of an object can be described by its speed, position and direction. Option D
What is motion?Th term motion has to do with the change in the position of an object. We have to note that if an object changes its position within a given time interval then we can say that the object has moved.
The rate at which an object moves is called the speed of the object. If the object move fast then the speed of the object is high. If the the object moves slowly then the object has a quite low speed.
Learn more about speed:https://brainly.com/question/28224010
#SPJ1
Missing parts;
The motion of an object can be described by its
A.
speed.
B. position.
c.
direction.
D.
all of these
Suppose you are planning a journey to the center of Earth in a self-propelled tunneling machine. List the properties of the special materials that would be needed to build the machine, and explain why each property would be important.
Special Materials means any and all materials which, under Environmental Requirements, require special handling in use, generation, collection, storage, treatment or disposal, or payment of costs associated with responding to the lawful directives of any court or agency of competent jurisdiction.
Properties of the special materials:
1. Stainless steel
2. Aluminum
3. Brass
4. Titanium
5. Steel
what is special materials?
Special Materials means any and all materials which, under Environmental Requirements, require special handling in use, generation, collection, storage, treatment or disposal, or payment of costs associated with responding to the lawful directives of any court or agency of competent jurisdiction.
Importance of property:
1.As a result of its adaptability, toughness, and effectiveness, stainless steel is a common material for use in precision machining. When it comes to stainless steel, there are numerous alternatives and varieties to consider. In order to obtain the required outcome, several varieties of stainless steel can be employed for diverse applications in precision machining.
2.Aluminum is even becoming a preferred choice to steel, with advances in cleaning and machining to make aluminum a more useful material. However, for best results, aluminum welding always needs to be handled by an experienced machining shop.
3.Free machining brass is another economical alternative material. Advantages of brass machining are the ease of machining, smooth, clean finish, non-sparking, holds tolerances and threads well.
To learn more about special materials from this link:
https://brainly.com/question/24002168
#SPJ9
kepler's third law, p2 = a3, means that
Kepler's third law, p^2 = a^3, means that the square of the total time period of a planet's revolution the sun is directly proportional to the cube of its mean distance from the Sun.
Kepler's third law is also known as the law of periods. It states that the shorter the orbit of the planet around the sun, the shorter will be its time period. These equation have helped to calculate the total time period of the planets of the Solar system.
Using Newton's law of gravitation, we can simplify the above equation as:
P^2 = 4π^2 /[G(M1+ M2)] × a^3
Here M1 and M2 are the masses of the revolving objects.
If you need to learn more about Kepler's third law, click here
https://brainly.com/question/4097378?referrer=searchResults
#SPJ4
Which of the following correctly displays the four fundamental forces in terms of decreasing range?
O a
Ob
Oc
Od
Electromagnetic force, weak nuclear force, gravity, strong nuclear force
Gravity, electromagnetic force, strong nuclear force, weak nuclear force
Weak nuclear forfe, gravity, strong nuclear force, electromagnetic force
Strong nuclear force, gravity, weak nuclear force, electromagnetic force
The correct order of four fundamental forces in terms of decreasing range is as follows:
Strong nuclear force >electromagnetic force > weak nuclear force > gravitational force
The strong nuclear force is what holds the fundamental particles together to create larger particles. The masses of the bodies and the separation between their centers of mass determine the gravitational pull. The decay of the particle is caused by the weak nuclear force.Between charged particles, an electromagnetic force operates. These definitions aid us in understanding the hierarchy of the forces.What is Force?A force is an effect that can alter an object's motion in physics. An object having mass can vary its velocity, or accelerate, in response to a force. Force can also be conceptualized as a push or a pull. A force is a vector quantity that has a magnitude and direction, and it is measured in the SI unit of newton (N).The net force acting on an object is equivalent to the rate at which its momentum varies over time, according to Newton's second law in its original version.This law states that, if the mass of the item is constant, the acceleration of the object is inversely proportional to its mass and directly proportional to the net force acting on it. It also states that the acceleration is in the direction of the net force.To learn more about Force, refer to:
https://brainly.com/question/13191643
#SPJ9
A red star and a blue star both have the same radius and are at the same distance from the earth. How does their observed brightness compare?.
An apparent brighter blue star.
The hue of light emitted by a star depends on its surface temperature. Yellow stars are hotter than red stars, and yellow stars are hotter yet than blue stars.
What are the red and blue star's color indices?The difference between a star's magnitude in one filter and its magnitude in another filter is that star's color index. Color indices can be calculated using any filter, but some of the more used ones are B-V and V-R. Red wavelengths are B, green wavelengths are V, and blue wavelengths are B. The star is bluer (and hotter) if B - V is small than if B - V is high since magnitudes decline with increasing brightness.
To know more about wavelengths, visit-https://brainly.com/question/12924624
#SPJ4
Question
A migrating bird can travel at a speed of 30 m/s. How far will it travel
in 25 minutes at this speed? Give your answer in metres (m), and in
kilometres (km).
Migrating bird that can travel at a speed of 30 m/s. It will travel 45 km (45000 m) in 25 minutes at this speed.
It will travel,
45 km (45000 m)
25 minutes is,
1500 seconds
as ,(25*60=1500)
distance is,
(speed*time)
distance=30m/s * 1500s -> 45000 m
-> 45 km
so, migrating bird will travel 45 km (45000 m)
To learn more about similar numericals , click below
https://brainly.com/question/24147129
#SPJ13
a woman standing and watching the stars on a cool, calm night will lose most of her body heat by which mechanism? radiation convection conduction evaporation radiation and convection only
A woman Standing and watching stars on a cool and calm night will lose most of her body heat by the mechanism of radiation.
In conduction method of thermal energy transfer energy take place between the objects by using the direct contact between the particles.
Convection is a method of heat transfer in which fluids do the heat transfer generally.
Evaporation method of heat transfer it is just a method cooling down the temperature of the body.
The only method of heat transfer that is valid in this case is radiation in which the heat transfer take place by the use of electromagnetic radiations coming directly from the sun or the moon or the stars.
So the correct answer here is only radiation.
To know more about thermal energy transfer, visit,
https://brainly.com/question/7541718
#SPJ4
Explain why the Ray of light is refracted towards the normal
Light rays bend towards the normal because they slow down when moving from a rarer medium to a denser medium.
How do light rays always refracted towards the normal?The reason behind the refraction of rays of light towards normal is that because slow down when moving from a rarer medium to a denser medium.
If the light rays enter any substance with a higher refractive index (which includes air into glass) then it will slow down. The light always bends towards the ordinary line. If mild travel enters into a substance with a lower refractive index (which includes from water into the air) then it will speed up. Therefore the ray of light always refracted towards the normal.
When the light rays enter from the air into a denser medium like water or glass then the ray of light will refract towards the normal. When light travels from a denser medium into the air, it will refract away from the normal.
So we can conclude that light rays slow down when moving from a rarer medium to a denser medium.
Learn more about Light here: https://brainly.com/question/1389429
#SPJ1
What is the correct expression for the small dog’s force magnitude Fs on the bone?
The correct expression for the force applied by the small dog is determined as Fs = ma + Fb.
What is the net force on the bone?
The net force on the bone will determine the direction of the bone's acceleration. The net force on the bone is determined by applying Newton's second law of motion.
If the acceleration of the bone is towards the right (rightward), the direction of the net force will be towards the right. This implies that the force applied by the dog on the right (S) is greater than the force applied by the dog on the left (B).
F(net) = Fs - Fb
The acceleration of the bone is calculated from the net force by applying Newton's second law of motion.
a = F(net) / m
a = (Fs - Fb)/m
make Fs the subject of the formula;
Fs - Fb = ma
Fs = ma + Fb
Thus, the correct expression for the force applied by the small dog is determined as Fs = ma + Fb.
Learn more about net force here: https://brainly.com/question/14361879
#SPJ1
y = A2 x - B
If y = 13.9, x = 4.45, and B = 8.87, what is A?
A is 2.56 . A function is a mathematical relationship in which the values of one or more independent variables influence the values of a single dependent variable.
What is functions and variables?The independent variable determines the dependent variable through function (s).
A variable is a value that is stored, and a function is a program (I can't think of another word for it). So you can have a n variable that stores the value 1, and a function called print(n) that prints whatever is inside the parenthesis, (n in this example), so the value stored in n is printed.
Therefore,
y = 13.9, x = 4.45, and B = 8.87,
13.9=A × 2(4.45) - 8.87
Switch sides
A × 2(4.45) - 8.87 = 13.9
Remove parentheses:
A × 2 × 4.45 - 8.87 = 13.9
Multiply the numbers: 2 × 4.45 = 8.9
8.9 A - 8.87 = 13.9
Multiply both sides by 100
8.9 A × 100-8.87 × 100= 13.9 × 100
Refine
890 A - 887 = 1390
Add 887 to both sides
890 A - 887 + 887 = 1390 + 887
Simplify
890 A = 2277
Divide both sides by 890
[tex]$\frac{890 A}{890}=\frac{2277}{890}$[/tex]
Simplify
[tex]$A=\frac{2277}{890}[/tex]
A = 2.56
To learn more about variables, refer to:
https://brainly.com/question/27894163
#SPJ9
Danny sails a boat downstream. The wind pushes the boat along at 21 km/hr. The current runs downstream at 15 km/hr. What is the actual velocity of the boat?
1.4 km/hr, downstream
6.0 km/hr, downstream
36 km/hr, downstream
310 km/hr, downstream
The actual velocity of the boat is 36 km/hr, downstream. Option C.
Solution:
Water velocity, v = 15 km/h
Downstream boat velocity, u = 21 km/h
Boat actual velocity = v'
v' = v + u
⇒ v' = 15 km /h + 21 km/h
u = 21 km/h +15 km/h = 36.0 km/h downstream.
At first glance, the sea looks flat but it is not. If you look closely wind, current, and wave action affect the six movements of the ship: heave, pitch sway roll pitch, and yaw. Relative velocity is defined as the velocity of object B in the still frame of another object A. The SI unit for velocity is meters per second m/s. Alternatively, velocity magnitudes can be expressed in centimeters per second cm/s.
Learn more about The actual velocity here:-https://brainly.com/question/19040181
#SPJ1
