Kinetic Energy

Question 1

Question 1

Revolt · Accepted Answer

99354

Question 2

Question 4

Revolt · Accepted Answer

99355

Question 3

Question 5

Revolt · Accepted Answer

585

Question 4

Question 6

Revolt · Accepted Answer

99362

Question 5

A 600 kg car is at rest, and then accelerates to 5 m/s. What is its original kinetic energy? J What is its final kinetic energy? J How much work was used? J

Revolt · Accepted Answer

Part 1: 0; Part 2: 7,500; Part 3: 7,500

Question 6

The mass of car 2 is twice the mass of car 1. If both cars have the same velocity, how does the kinetic energy of car 2 compare to car 1?

Revolt · Accepted Answer

Car 2 has twice the kinetic energy.

Question 7

Assume the objects listed below have the same velocity. Which object has the most kinetic energy?

Revolt · Accepted Answer

a plane

Question 8

Which expressions correctly represent variations of Ohm’s law? Check all that apply.P = IRV = IRR = IVR = I = V =

Revolt · Accepted Answer

V = IR; R =; I =

Question 9

Explain the work-energy theorem, including the direction energy moves and how it relates to positive and negative work.

Revolt · Accepted Answer

The workenergy theorem states that work is the change in energy resulting from a change in velocity. When positive work is done, energy is transferred from the environment to the object, and the object's velocity increases. When negative work is done, the object transfers energy to the environment, and the object's velocity decreases.

Question 10

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

Work is the change in energy brought about by a change in velocity.; When the velocity of an object increases, the environment has done work on the object and the energy of that object is increased.; When the velocity of an object decreases, the object has done work on the environment and the energy of the object is decreased.

Kinetic Energy Answers

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