Each of the boxes shown is pulled for 10 m across a level, frictionless floor by the force given. Which box experiences the greatest change in its kinetic energy?

Starting from rest, a marble first rolls down a steeper hill, then down a less steep hill of the same height. Ignoring friction, for which is it going faster at the bottom?

A small child slides down the four frictionless slides A–D. Rank in order, from largest to smallest, her speeds at the bottom.

You are traveling along a freeway at 65 mi/h; your car has kinetic energy. You suddenly skid to a stop because of congested traffic. Which of the following is true?

A major league pitcher can throw a baseball with a kinetic energy of 150 J. How much work must the pitcher do to the ball to give it that much KE?

A rock has 10 J of potential energy on top of a roof. If it is dropped and lands with only 8 joules of kinetic energy, how much work did air resistance do on the rock?

In the equation PE = mgh, what does the “g” mean?

Which requires more power – a person walking up stairs or a person running up stairs?

A basketball that is dropped bounces back up to its original height. Pick the correct energy transformation from the point when it was dropped until it returns to the original height.

A light plastic cart and a heavy steel cart are both pushed with the same force for a distance of 1.0 m, starting from rest. After the force is removed, the velocity of the light plastic cart is ________ that of the heavy steel cart.

Let "P" represent the force of Pablo. How much work is done by Pablo if P = 100 N?

Let "P" represent the force of Pablo. P = 100 N. If the box moves with a constant velocity, determine the amount of work done by friction.

Let "P" represent the force of Pablo. P = 100 N. If there is ZERO friction, and the box has mass 100kg, determine the velocity of the box after Pablo's work has been done. The box begins at rest.