Test — Test Answers

If the kinetic and potential energy in a system are equal, then the potential energy increases. What happens as a result?

What is the unit of measure for energy?

When a spring is compressed, the energy changes from kinetic to potential. Which best describes what is causing this change?

The table shows information about four students who are running around a track. Which statement is supported by the information in the chart?

Which two types of potential energies would be types of mechanical energies?

Seema knows the mass of a basketball. What other information is needed to find the ball’s potential energy?

Which is occurring when work is being done?

When Javier touches a hot mug of tea, energy is transferred from the surface of the mug to his hand. What kind of energy is this?

Which set of terms best defines what affects kinetic energy and potential energy, respectively?

Atoms contain subatomic particles called protons and neutrons. When these protons and neutrons split, a lot of energy is released.

The amount of kinetic energy an object has depends on which feature of the object?

The diagram shows a person holding a bow and arrow.

Which term describes the energy an object has because of its motion?

This diagram shows a skier moving down a hill.

Four people make observations recorded in the table.Which best describes what the observations have in common?

A soccer ball is traveling at a velocity of 50 m/s. The kinetic energy of the ball is 500 J. What is the mass of the soccer ball? (Formula: )

What is the energy of an object because of its potential and kinetic energies?

A car is moving at 12 m/s and has a mass of 600 kg. What is the kinetic energy of the car? (Formula: )

How does work affect energy between objects so it can cause a change in the form of energy?

Which statement best describes the work and energy in these examples?Example 1: Running a car requires gas.Example 2: Humans require food to live.