Force and Motion Unit Exam

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It depends on the mass of the object and the square of its velocity.

Front

Which object has the greatest kinetic energy if all are moving at the same speed: tennis ball, ping pong ball, hockey puck, or bowling ball?

Back

Bowling ball.

Front

At which point does a pendulum have the greatest potential energy?

Back

At the highest point of its swing.

Front

What is the formula for Newton's second law of motion?

Back

F = MA (Force equals mass times acceleration).

Front

What does Newton's third law state?

Back

For every action, there is an equal and opposite reaction.

Front

How can the motion of an object change?

Back

An object can change its motion by speeding up, slowing down, or changing direction.

Front

What is the relationship between force, mass, and acceleration?

Back

Force is directly proportional to mass and acceleration.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state.

Front

What happens to the kinetic energy of an object if its speed doubles?

Back

The kinetic energy increases by a factor of four, since KE = 1/2 mv².

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.