Force & Motion Unit Assessment

Is there a balanced or unbalanced force acting on Mr. Collins' arm?

• balanced

• unbalanced

Tags

NGSS.MS-PS2-2

Which curling stone(s) experienced the strongest force when hit? How do you know?

• A) The blue curling stone experienced the strongest force because it changed speed the most.

• B) The orange curling stone experienced the strongest force because it has the fastest ending speed.

• C) The yellow and orange curling stones experienced the same strength force because they both gained force, but the blue stone lost force.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following best describes the term velocity?

• how fast an object is moving

• how much force an object has

• the speed and direction of an object

• how fast an object is speeding up or slowing down

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.

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

• The floor absorbs force from the block.

• The block ran out of force.

Tags

NGSS.MS-PS2-2

Is Mr. Collins' arm moving?

• no

• yes

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the net force acting on Mr. Collin's arm?

• 250 N

• 50 N

• 12.5 N

• 25 N

Tags

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(s) experienced the strongest force when it was bumped? How do

you know?

• 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.

• 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.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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

If the same force is applied to all four(4) objects, which object will accelerate(change velocity) the most?

NOTE: Each object has a different mass

• A

• B

• C

• D

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If the same force is applied to all four(4) objects, which object will accelerate(change velocity) the least?

NOTE: Each object has a different mass

• A

• B

• C

• D

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2