Unit Test Review

Multiple Choice

The diagram shows a cart moving freely along a track.

What happens to the energy of the cart as it moves from point A to point B on the diagram?

• Potential energy is transformed to kinetic energy.

• Kinetic energy if transformed to potential energy.

• Both potential energy and kinetic energy stay the same.

• Potential energy decreases and kinetic energy stays the same.

Multiple Choice

            Derrick launches a ball of clay into the air using a catapult. He calculates its kinetic energy to be 9.0 J. Then he tears it in half and forms a ball that has half the mass. He launches the smaller ball into the air at the same speed. What is the kinetic energy of the smaller ball?

• 3 J

• 4.5 J

• 9 J

• 18 J

Multiple Choice

NASA is testing identical rockets using the same platform. The data collected from one launch are shown in the graph.

Which of these describes the relationship between the rocket’s speed and its kinetic energy?

• There is no relationship between speed and kinetic energy.

• There is a linear relationship between speed and kinetic energy.

• There is a constant relationship between speed and kinetic energy.

• There is a nonlinear relationship between speed and kinetic energy.

Multiple Choice

Which diagram models the position of a soccer ball when it has the greatest amount of gravitational potential energy?

Multiple Choice

A person moves a ball up a ramp. Which statement describes this process?

• There is no transfer of energy or work done.

• There is a transfer of energy, and work is done.

• There is no transfer, but work is done.

• There is a transfer of energy, but no work is done.

Multiple Choice

In a local competition, students race model cars that they built. The cars were held still at the top of a ramp and then released. Each car’s velocity was measured at the bottom of the ramp to calculate each car’s kinetic energy.

Based on the data in the table, which of these could be the potential energy of Car 2 at the top of the hill?

• 6 Joules

• 10 Joules

• 12 Joules

• 15 Joules