Can y’all please help because my teacher didn’t really explain it to me

Explanation:

what is this language? ..............

Panthera is a genus within the family Felidae that was named and described by Lorenz Oken in 1816 who placed all the spotted cats in this group.

Option C,

The goal of a theory is to explain natural and physical phenomena.

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(Answered by Benjemin)

Answer: 482.8032 km per hr

Explanation: 300 * 1.609344 =

Explanation:

Formula for momentum

P=mv

= 10 x 5

= 50kg m/s

Answer:

50Kg m/s

Explanation:

the equation for momentum is mass x velosity

Answer:

C

Explanation:

Options A and B are not even pointing in the direction as the vectors in the question so they shouldn't even be considered.

Option C looks like the closes since vectors A and B are pointing in a similar direction (negative x-axis)

The best representation for the resultant vector representing the resultant R=A+B would be option C because the result is represented by the closing side of the triangle, therefore the correct answer would be C.

The quantities that contain the magnitude of the quantities along with the direction are known as the vector quantities.

Examples of vector quantities are displacement, velocity acceleration, force, etc.

As given in the problem we have to find out the resultant vector from the sum of vector A and vector B,

The resultant of the vector can be calculated with the help of the triangle law of the vector addition in which the sum is given by the closing side of the triangle.

Thus, the correct answer is option C.

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Kinematics deals with the motion and time

It is concerned with motion

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]

Answer:

flowers

Explanation:

flowers cannot change

Answer:

Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics. ...

Explanation:

Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics.

Explanation:

Suppose the cheetah is initially positioned at x=0 (m) from the reference, and the gazelle is intially at poisiton x=d (m).

Then, at the worst case, that is when cheetah is running at the maximum case, the position of the gazelle relative to the reference must be larger than that of cheetah.

In equation form,

[tex]0\text{ km}+\frac{100\text{ km}}{1 \text{ hr}}\cdot30\text{ s }\cdot\frac{1\text{ hr}}{3600\text{ s}}\le d \text{ km}+\frac{80\text{ km}}{1 \text{ hr}}\cdot30\text{ s }\cdot\frac{1\text{ hr}}{3600\text{ s}}[/tex]

[tex](100-80)\cdot \frac{30}{3600}\le d[/tex]

[tex]d\ge \frac16\text{ km}=166.66 \text{m}[/tex]

The minimum distance that a gazelle running 80.0 km/hr be ahead of the cheetah to escape is 6.5807km

If a cheetah can maintain its maximum speed of 100 km/hr for 30.0 seconds, the distance covered by the cheetah is expressed as:

Distance  = Speed * time

Given the following:

Distance covered = 100 * 0.00833333

Distance covered = 0.0833 km

If gazelle is running at a speed of 80.0km/hr, the distance of gazelle will be expressed as:

Taking the difference in distance = 6.6664km - 0.0833 km =6.5807km

Hence the minimum distance that a gazelle running 80.0 km/hr be ahead of the cheetah to escape is 6.5807km

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Answer:

P=4.2V    E=1512J

Explanation:

P=?

P=VI

Putting the values

P=2*0.6

E=?

E=P*t

E=4.2*6*60

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Answer:

the speed after 2 seconds = 20m/s

Explanation:

I took g as -10m/s² because the ball was moving against gravity

using V = u + gt

V = 40 - 10 X 2

V = 40 - 20

V = 20m/s

The velocity after 2 seconds later will be 20.38 m/s.

Velocity is the rate of distance covered per time. Velocity could be average or instantaneous.

Average velocity can be given as;

Average velocity = total distance / total time taken

Velocity has a huge amount of application in science and technology.

Units of velocity are given by ⇒ meter/second

The kinetic energy of an object is caused due to velocity only.

For example, if a car drives 50 meters for 10 seconds and it is constant then 50/10 = 5 meters/second will be the velocity.

Given that,

Initial velocity u = 40 m/s

Time period t = 2 seconds

By newtons first equation of motion

v = u - gt ( since acceleration is upward)

v = 40 - 9.81 × 2

v = 40 - 19.62

v = 20.38 m/s

Hence "The velocity after 2 seconds later will be 20.38 m/s".

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Answer:

D

Explanation:

The motion of an object can be described by its speed, position, and direction so its all of the above

Answer:

a

Explanation:

The bar magnet moves downward with respect to the wire loop, so that the number of magnetic field lines going through the loop decreases with time. This causes an emf to be induced in the loop, creating an electric current.

in other words, the magnets motion creates a current in the loop

Answer:

A?

Explanation:

Answer:

Does not stick to glass, expands uniformly when heated

Explanation:

If u want some more

Good conductor of heat

Low freezing point : - 39°C

High boiling point : 357°C

Have a good day, hope I helped

Answer:

v = 60 m/s

final velocity after 20 seconds depends on how long it continues to accelerate after 20 seconds. Also we do not know the direction to complete the velocity requirements of a scalar value and direction component.

Explanation:

If we assume that the acceleration is constant

d = ½at² = ½(Δv/t)t² = ½Δvt = ½(v - 0)t = ½vt

v = 2d/t

v = 2(600)/20 = 60m/s

Answer:

The Answer is C. the student changed too many variables.

Explanation:

For the quiz in K12

Answer:

Thermal and kinetic.

Explanation:

Thermal energy is the energy generated by heat. Kinetic energy is the movement of particles in a substance which is responsible for the heat increase.

Answer:Thermal and kinetic.

Explanation:

Explanation:

Given:

[tex]v_0 = 28.0\:\text{ft/s}[/tex]

[tex]v = 50.0\:\text{ft/s}[/tex]

[tex]t = 7.40\:\text{s}[/tex]

First, we calculate the acceleration of the car during this time:

[tex]v = v_0 + at \Rightarrow a = \dfrac{v - v_0}{t}[/tex]

Plugging in the given values, we get

[tex]a = \dfrac{50.0\:\text{ft/s} - 28.0\:\text{ft/s}}{7.40\:\text{s}} = 2.97\:\text{ft/s}^2[/tex]

Now that we have the value for the acceleration, we can solve for the distance traveled during the time t:

[tex]x = v_0t + \frac{1}{2}at^2[/tex]

[tex]\:\:\:\:=(28.0\:\text{ft/s})(7.40\:\text{s})[/tex]

[tex]\:\:\:\:\:\:\:\:\:\:\:\:+ \frac{1}{2}(2.97\:\text{ft/s}^2)(7.40\:\text{s})^2[/tex]

[tex]\:\:\:\:= 289\:\text{ft}[/tex]

[tex]\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]

[tex]\\ \sf\longmapsto Acceleration=\dfrac{100-0}{20}[/tex]

[tex]\\ \sf\longmapsto Acceleration=\dfrac{100}{20}[/tex]

[tex]\\ \sf\longmapsto Acceleration=5m/s^2[/tex]

Answer:

[tex]initial \: velocity \: = 0 \\ final \: velocity \: 100 \frac{m}{s} \\ time = 20 \\ here \: we \: want \: to \: find \: accelaration \\ accelaration \: = \frac{final \: velocity - initial \: velocity}{time} \\ accelaration \: = \frac{100 - 0}{20} = \frac{100}{20} = 5 \frac{m}{ {s}^{2} } \\ thank \: you[/tex]

For centuries, physicists thought there was no limit to how fast an object could travel. ... Only massless particles, including photons, which make up light, can travel at that speed. It's impossible to accelerate any material object up to the speed of light because it would take an infinite amount of energy to do so.

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The average speed of the ant is 0.276 cm/s and the average velocity is 0.136 cm/s.

The correct answer is option D.

In the given graph, we can deduce the following;

The average speed of the ant is calculated as;

[tex]average \ speed = \frac{total \ distance }{total \ time }[/tex]

The total distance from the graph is calculated as follows;

The total distance = (6 + 2 + 2 + 7 + 7 + 3 + 2) cm = 29 cm

[tex]average \ speed = \frac{total \ distance }{total \ time } = \frac{29 \ cm}{105 \ s} = 0.276 \ cm/s[/tex]

The average velocity is calculated as the change in displacement per change in time.

The displacement is the shortest distance between the start and end positions.

Notice, you have a right triangle, now calculate the length of  line P.

                                                ↓end

                                                ↓

                                                ↓ 6cm

                                                ↓

  start -------------13 cm------------

Use Pythagoras theorem to solve for P.

[tex]P^2 = 6^2 + 13^2\\\\P^2 = 36 + 169\\\\P^2 = 205\\\\P= \sqrt{205} \\\\P = 14.318 \ cm[/tex]

The average velocity of the ant is calculated as;

[tex]average \ velocity= \frac{\Delta displacemnt }{total\ time }= \frac{14.318 \ cm}{105 \ s} = 0.136 \ cm/s \\\\[/tex]

Thus, the average speed of the ant is 0.276 cm/s and the average velocity is 0.136 cm/s.

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Answer:

1.because of gravitational force.

2.By rubbing hands.

Explanation:

3.When the string breaks the stone no longer rotates around its center of rotation, but won't suddenly move directly away from it, and will instead continue to follow its path of inertia. That is, it will continue to move in the direction in which it was moving at the moment the string broke.

it is the short method of calculating economics

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Answer:

In terms of distance, average speed is 20 km/h

In terms of displacement, average speed is 0 km/h.

Explanation:

Total distance:

[tex] = (40.0 - 10.0) + (20.0 - 10.0) + (40.0 - 20.0) \\ = 30.0 + 10.0 + 20.0 \\ = 60.0 \: km[/tex]

Total time is 3.0 hours

but:

[tex]average \: speed = \frac{total \: distance}{total \: time} \\ [/tex]

In terms of distance.

substitute:

[tex]average \: speed = \frac{60.0}{3.0} \\ \\ = 20 \: {kmh}^{ - 1} [/tex]

[tex]displacement = ( - 30.0) + 10 .0+ 20.0 \\ = 0[/tex]

In terms of displacement:

[tex]speed = \frac{0}{3} \\ \\ = 0 \: {kmh}^{ - 1} [/tex]