Force and Motion End of Unit Review #2

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

• hit something

• bounce off something

• Speed Up

• fly off the table

Tags

NGSS.3-PS2-1

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

Tags

NGSS.MS-PS2-2

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

• the same direction as the object's motion

• the opposite direction as the object's motion

• any direction

Tags

NGSS.3-PS2-1

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.

Tags

NGSS.3-PS2-1

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

Tags

NGSS.MS-PS2-2

A push or pull that can cause motion.

• velocity

• speed

• cause

• force

Tags

NGSS.MS-PS2-2

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

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Tags

NGSS.MS-PS2-1

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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• 
• 

Tags

NGSS.MS-PS2-1

Sandra pushed a wooden block and it slid across the floor. The wooden block gradually slowed down and stopped after moving 10 meters.

Why did the block stop moving?

• The floor exerted a force that is opposite to the direction of the block’s motion.

• The block ran out of force.

• The floor absorbs force from the block.

• All objects stop moving because their natural state is to be still.

Three boats were moving across the surface of a lake. The gray and pink boats are a greater mass than the orange boat. Each boat was bumped by another boat. Which boat experienced the strongest force when hit? How do you know?

• The gray and pink boats because they are more massive, and all boats changed velocity by same amount.

• The pink boat - it's as massive as the gray boat and has the highest ending speed.

• All three - they all changed speed by the same amount.

• The gray boat - it takes more force to slow down an object than it takes to make it go faster.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1