Unit 3 Test Review- Force and Motion

A person is swimming across a lake when the current increases speed in the opposite direction of the swimmer. Due to this force, the swimmer's speed __________.

• balanced

• unbalanced

• increases

• decreases

Tags

NGSS.MS-PS2-2

When Trevor jumps to the dock from his small boat, the boat dips into the water. This is an example of -

• Newton's 1st law

• Newton's 2nd law

• Newton's 3rd law

• the Universal Law of Gravitation

Tags

NGSS.MS-PS2-1

A girl is standing on a skateboard and facing east. If she bends her knees and jumps off the skateboard in the direction she is facing, which direction will the skateboard move?

• north

• south

• east

• west

Tags

NGSS.MS-PS2-1

The diagram shows a car moving to the right with a force of 35 newtons while the wind is blowing to the left with a force of 15 newtons. What is the net force acting on the car?

• 50 N to the right

• 20 N to the right

• 20 N to the left

• 50 N to the left

Tags

NGSS.MS-PS2-2

Two different forces that are interacting with each other are displayed in the image below. Which of the following statements accurately describe the forces? Select TWO correct answers.

• The two forces would be added to determine the net force.

• The two forces would be subtracted to determine the net force.

• The net force would be 60 newtons to the right.

• The net force would be 60 newtons to the left.

• The net force would be 0 newtons to the right.

Tags

NGSS.MS-PS2-2

The diagram below shows a cart at various positions on a track. The speed of the cart at each position is also listed. At which positions on the track is the cart experiencing an unbalanced force? Select TWO correct answers.

• Position A and Position D

• Position B and Position C

• Position A and Position B

• Position C and Position D

Tags

NGSS.MS-PS2-2

Which of the following is true for an unbalanced force?

• Net force equals zero

• At rest

• Change in speed

• Constant speed

Tags

NGSS.MS-PS2-2

Which of the following scenarios involves an unbalanced force?

• A car moving at a constant speed

• A book resting on a table

• A ball rolling down a hill

• A chair sitting still

Tags

NGSS.MS-PS2-2

What is the net force when an object is accelerating?

• Zero

• Greater than zero

• Less than zero

• Cannot be determined

Tags

NGSS.MS-PS2-2

What type of force is acting on the cart at Position D?

• Balanced force

• Unbalanced force

• Increasing force

• Decreasing force

Tags

NGSS.MS-PS2-2