friction

Friction is..

• a tool that helps you

• a force that helps you to move objects

• a force that slows down a moving object

Friction can poduce heat

• True

• False

If you poured oil onto a wooden surface, the friction would ..

• be decreased

• be increased

• remain the same

friction is one type of ..

• force

• gravity

• speed

• direction

Tags

NGSS.MS-PS2-2

Which motion has less friction

• Sliding on grass

• Sliding on ice

Which one of these has more friction

• Rough object-Rough surface

• Rough object-Smooth surface

• Smooth-object-Smooth surface

How can a sailboat increase its water resistance?

• Make the sail bigger

• Make the sail smaller

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

• similar
• opposite
• parallel
• west

What is the unit of the friction force?

• none

• Newton

• meter

• kilogram

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

• Brakes used on a bike

• car tires on the road

• Catching objects

• All of them