Laws of Motion Unit Test Review

What is force?

• the ability to do work by applying force

• a push or pull on an object

• the sum of all forces acting on an object

• exerting energy on an object

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

What is the best definition of inertia?

• a force that pushes objects down

• a force that keeps objects from breaking down

• a property of matter that makes objects stop

• a property of matter which resists change to the state of motion or rest

Answer explanation

Object in motion stays in motion and object at rest stays at rest.

Inertia refers to _____. 

Select TWO answer choices.

• the tendency of moving objects to remain in motion

• the force that keeps stationary objects at rest

• the force which keeps moving objects in motion with a constant velocity

• the tendency of resting objects to remain at rest

Because of inertia, a moving object will keep ________.

• at rest

• in one spot

• moving

• inertia 

What is the net force?

• 17N

• 3N ----->

• 3N <-----

• 10N ------->

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Which description below describes the motion in the picture below?

• The forces are balanced

• The forces are unbalanced

• The forces cancel each

• The forces are equivalent

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What is the net force of this object?

• 400 N downward

• 800 N upward

• 400 N upward

• 800 N downward

Tags

NGSS.MS-PS2-2

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What is the net force in the force model picture?

The net force =  (a)   N

​

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

A large apple hangs from a branch of an apple tree. Which statement correctly describes how the forces on the apple affect its stability?

• The forces are balanced so the apple will have a change in motion.

• The forces are balanced so the apple will not have a change in motion.

• The forces are unbalanced so the apple will have a change in motion.

• The forces are unbalanced so the apple will not have a change in motion.

Tags

NGSS.MS-PS2-4

In which picture would the duck be speeding up in the forward direction?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1