Force and Motion Unit Test

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.MS-PS3-1

NGSS.MS-PS3-5

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 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

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.MS-PS2-2

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-PS2-1

NGSS.MS-PS2-2

Speed in a particular direction

• force

• velocity

• motion

To apply a force

• exert

• exit

• bounce

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Three toy boats with the same mass were in a lake. Two boats were moving and one was stopped. Each boat got bumped by another boat, but not in the same direction. All the boats changed speed as a result of being bumped. Use the information in the diagram to answer.Which toy boat experienced the strongest force when it was bumped? How do you know?

• The gray toy boat experienced the strongest force because it had the fastest ending speed.

• The orange and gray toy boats experienced the strongest forces because they both gained the same force as they sped up. The blue boat lost force, so it slowed down.

• All three toy boats experienced the same strength force because they changed speed by the same amount.

• The blue toy boat experienced the strongest force because it takes a stronger force to slow something down than it takes to speed something up.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Three chairs were rolling across a flat office floor. The blue and red chairs are the same mass, and they have more mass than the yellow chair. Each chair was hit by another chair, but not from the same direction. Use the information in the diagram to answer.Which chair(s) experienced the strongest force when hit? How do you know?

• The blue and red chairs experienced the strongest force because they are both more massive than the yellow chair and they changed speed by the same amount.

• The red chair experienced the strongest force because it is as massive as the blue chair and has the highest ending speed.

• All three chairs experienced the same force because they changed speed by the same amount.

• The blue chair experienced the strongest force because it takes more force to slow an object than it takes to make it go faster.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2