Force and Motion Review

Which of the following is one of the five ways an object's motion can change:

• all of these

• change direction

• stop moving

• speed up

In order for an object to speed up, the direction of the force is:

• in any direction

• in the same direction as the object's motion

• in the opposite direction of the object's motion

In order for an object to stop moving, the force must come from

• the same direction as the object's motion

• the opposite direction as the object's motion

• any direction.

Complete the sentence to match your observations: When you exert a stronger force on an object, you will see ________ change in velocity as compared to exerting a weaker force on the same object.

• a greater

• a weaker

• the same

A push or pull that can cause motion.

• velocity

• speed

• cause

• force

Speed in a particular direction

• force

• velocity

• motion

Which of the following pictures models Claim 1: The thrusters caused the pod to move in the opposite direction.

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Which of the following models claim 2: The thrusters only slowed the pod, it didn't stop. The pod hit the space station, which made it bounce and move in the opposite direction.

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In a collision, forces are exerted in which direction

• any direction

• same direction

• opposite directions

Forces in a collision are always

• the same strength in opposite directions

• different strengths in the same direction

• the same strength in the same direction

• different strengths in opposite directions