Force & Motion Review

A person is pushing a box up a ramp. Which force will decrease if the surface of the ramp is made smoother?

• Gravity

• Friction

• Magnetism

This type of force resist motion between two surfaces that are in contact with each other

• contact

• gravity

• friction

This type of force between two objects will cancel each other out and the object will not move 

• balanced
• unbalanced

What force brings the pencil down?

• Applied
• Magnetic
• Normal
• Gravitational

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

An _______ force must act on an object for it to CHANGE it's motion

• balanced
• unbalanced
• gravitational
• electrical

Tags

NGSS.MS-PS2-2

Which of these could increase the friction between objects?

• Thick air molecules
• Water
• A rough surface
• A smooth surface

Greater friction causes...

• An increase in speed
• A decrease in speed
• Both of these
• Neither increase or decrease

Tags

NGSS.MS-PS2-2

Gravity is... ?

• A combination of all forces known to man
• A resistance to change in motion
• A force that pulls objects toward each other
• A change in the velocity of different types of matter

Tags

NGSS.MS-PS2-4

In a car accident, a seat belt helps prevent injuries by applying a force…

• Less than the force of the moving passenger

• Greater than the force of the moving car

• In the same direction as the car’s motion

• In the opposite direction of the passenger’s motion

Tags

NGSS.MS-PS2-1

If the force used to push a shopping cart increases, the cart’s acceleration will

• Decrease

• Increase

• Remain the same

Tags

NGSS.MS-PS2-2