Amplify Force and Motion Unit Review

Front

What is velocity?

Back

Velocity is the speed and direction of a moving object.

Front

Which boats experienced the strongest force when bumped?

Back

The gray and pink boats experienced the strongest force because they are more massive, and all boats changed velocity by the same amount.

Front

In a collision, how can we determine which object experienced a stronger force?

Back

The object that is more massive or that experiences a greater change in velocity typically experiences a stronger force.

Front

What happens to the force experienced by an asteroid during a crash?

Back

The force on the asteroid is stronger if the force on the planet is stronger during the crash.

Front

What is one way an object's motion can change?

Back

An object's motion can change by speeding up.

Front

What is the relationship between mass and force in a collision?

Back

In a collision, more massive objects require more force to change their motion.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object when it comes into contact with another surface.

Front

What is the effect of a collision on the motion of objects involved?

Back

A collision can change the speed and direction of the objects involved.

Front

What is the principle of conservation of momentum?

Back

The total momentum of a closed system remains constant if no external forces act on it.

Front

How does mass affect acceleration according to Newton's second law?

Back

According to Newton's second law, acceleration is inversely proportional to mass; as mass increases, acceleration decreases for a given force.