When a 1.0-kilogram cart moving with a speed of 0.50 meter per second on a horizontal surface collides with a second 1.0-kilogram cart initially at rest, the carts lock together. What is the speed of the combined carts after the collision? [Neglect friction.]

Which graph best represents the greatest amount of work?

How much work is done by the force lifting a 0.1-kilogram hamburger vertically upward at constant velocity 0.3 meter from a table?

The watt*second is a unit of what measurement?

A shopping cart slows as it moves along a level floor. Which statement describes the energies of the cart?

Which graph represents the relationship between the kinetic energy and the speed of a freely falling object?

A car uses its brakes to stop on a level road. During this process, there must be a conversion of kinetic energy into

In the diagram below, an ideal pendulum released from position A swings freely to position B. As the pendulum swings from A to B, its total mechanical energy

A pendulum is made from a 7.50-kilogram mass attached to a rope connected to the ceiling of a gymnasium. The mass is pushed to the side until it is at position A, 1.5 meters higher than its equilibrium position. After it is released from rest at position A, the pendulum moves freely back and forth between positions A and B, as shown in the diagram below. What is the total amount of kinetic energy that the mass has as it swings freely through its equilibrium position? [Neglect

friction.]

The graph below represents the work done against gravity by a student as she walks up a flight of stairs at constant speed. Compared to the power generated by the student after 2.0 seconds, the power generated by the student after 4.0 seconds is

Two elevators, A and B, move at constant speed. Elevator B moves with twice the speed of elevator A. Elevator B weighs twice as much as elevator A. Compared to the power needed to lift elevator A, the power needed to lift elevator B is

What is the maximum height to which a motor having a power rating of 20.4 watts can lift a 5.00-kilogram stone vertically in 10.0 seconds?

A spring gains 2.34 joules of elastic potential energy as it is compressed 0.250 meter from its equilibrium position. What is the spring constant of this spring?

The diagram below represents a spring hanging vertically that stretches 0.075 meter when a 5.0-newton block is attached. The spring-block system is at rest in the position shown. What is the value of the spring constant?