Force, Gravity, & Friction

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed
• less friction doesn't affect speed

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

Which of the following is an example of friction that is helpful?

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful

What does friction produce?

• light
• sound
• heat
• gravity

Tags

NGSS.MS-PS2-2

 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

A ____________ is a push or a pull on an object.

• friction
• force
• magnet
• gravity

Tags

NGSS.HS-PS2-1

What is the net force?

• 10 N
• 0 N
• 25 N
• 1 N

Tags

NGSS.MS-PS2-2

If these teams are pulling with the same amount of force what will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Balanced or unbalanced?

• balanced
• unbalanced

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Forces that have a net force of zero 

• Balanced force
• Unbalanced force