52 Answered Questions for the topic kinetic energy

#### Your physics book is resting in front of you on a horizontal table in the campus library. You push the book over to your friend,...... (IN THE DESCRIPTION)

Your physics book is resting in front of you on a horizontal table in the campus library. You push the book over to your friend, who is seated at the other side of the table, 0.400 m m north and...
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#### Average Kinetic Energy of 2 Objects

If I had 2 objects of equal mass ( 10kg for example ), and knew that the average speed of the 2 objects was 8 ms-1 , is it possible to calculate the average kinetic energy of the 2 objects. I...
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Kinetic Energy Physics

12/06/19

#### A 3.0 kg mass body has an initial velocity v0 = (6.0 i - 2.0 j) m/s.

(a) What is the initial kinetic energy? (b) Determine the value of the final kinetic energy if its velocity changes to v0 = (8.0 i + 4.0 j)?

#### Car A has triple the mass and speed of Car B. What is the ratio of the kinetic energy of Car A to Car B?

A. 3B. 6C. 9D. 27

Kinetic Energy Physical Science

05/12/19

#### Assume you know the mass and kinetic energy of an object. Write the equation that would solve for the object's velocity.

Kinetic Energy Physics

02/04/19

#### Kinetic energy is the energy that is stored while going downhill. Potential energy is the energy released to get up the hill.

Is this statement true or false?

Kinetic Energy

10/18/18

#### How does the mass of a diver impact the potential energy of the diver?

Kinetic Energy

09/28/18

#### what is the kinetic energy

What is the kinetic energy of a girl with mass of 40kg running steadily at a speed of 5ms

09/28/18

#### speed of the ball

A machine throws tennis balls contains a spring with a spring constant of 145N/m. When you push a ball into the machine,the spring compresses by 1.5cm.The mass of the ball is 55g
Calculate the...
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05/06/18

#### Energies in orbit

A meteor with a mass of 58000 kg falls from an radius of 7.1x10^6 m above the surface of the earth.
a) What is the speed of the meteor just before impact with the surface of the earth?
b)...
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Kinetic Energy Potential Energy

05/03/18

#### what is kinetic energy

i want to know more about kinetic and potential energy

04/05/18

#### A mass of 10 grams and velocity of 9 centimeters per second has a kinetic energy of _____ergs.

Kinetic energy varies jointly as the mass and the square of the velocity. A mass of 15 grams and velocity of 7 centimeters per second has a kinetic energy of 147 ergs. Find the kinetic energy for a...
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Kinetic Energy

03/06/18

#### Can you help me with this answer?

A particle with mass m = 1.67 x 10 -27 kg is being accelerated along a straight line at 3.6 x 10 15m/s 2 . If the particle has initial speed of 2.4 x 10 7 m/s and travels a distance of 2.8 cm, what...
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02/07/18

#### How to calculate kinetic energy of a system? (Momentum and impulse)

I posted this question yesterday, but there is another part of the problem I don't understand
A 0.76 kg fireworks rocket moving at a speed of 32 m/s breaks into two pieces as the result of an...
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Kinetic Energy

12/31/17

#### A car is moving with a sped of 15km/h and another identical car is moving at a speed of 30km/h.Conpare their kinetic energy

It’s a kinetic energy sun with formula 1/2mv2

12/30/17

#### Physics Mechanical Energy and Friction

An asteroid with a mass of 5.0 x 105 kg collides with the Earth and slides horizontally along the ground without bouncing (not actually possible but just pretend). The velocity of the asteroid...
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#### Energy lost to heat

In an attempt for a physics teacher to explain the conservation of energy to a student, the teacher goes down a 6.0 m high sliding board. At the bottom, he only travels 7.0 m/s. If the mass of the...
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07/27/17

#### Conservation of Energy

A 45 kg student runs with a speed of 2.0 m/s off a horizontal ledge that is 5.0 above a swimming pool. Calculate the vertical speed of the student when she hits the water.
...
Energy before...
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Kinetic Energy Physics

02/17/17

#### Electrostatics

Two charges q1 = −3.20 nC and q2 = +8.15 nC are at a distance of 1.28 µm from each other. q1 is fixed at its location while q2 is released from rest.
(a) What is the kinetic energy of the charge...
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02/14/17

#### Calculate velocity and acceleration during collisions.

A small car of mass 500kg is travelling at 120km/h when it hits stationary truck (of 1.5 tonne mass) head on. The small car rebounds and travels in the opposite direction at 40km/h. The collision...
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11/27/16

#### Physics: Work, Kinetic Energy, and Energy Lost to Friction

A 1.00-kg block is pushed along a rough horizontal floor with a horizontal force of 5.00 N for a distance of 5.00 m. If the block is moving at a constant velocity of 4.00 m/s, find...
The work...
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Kinetic Energy Physics

11/16/16

#### physics-KE question

A girl on a playground swing starts from rest at an angle θ=34.2 from the vertical. The chains have length L=6.8 meters. Find her speed as she passes through the bottom of the swing. Assume no...
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Kinetic Energy

11/07/16

#### A wagon moving at a speed of 25 km/have has a kinetic energy of 6000 kg•km2/h2. What is the mass of the wagon

A wagon moving at 25 km/h has a kinetic energy of 6000 kg•km2/h2. What is the mass of the wagon

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