Friction

Front

What is the unit called that measures force? Options: weight, meter, Newton, kilogram

Back

Newton

Front

The force that acts in the opposite direction of motion when two surfaces come in contact.

Back

Friction

Front

What type of friction is not moving? Options: static, sliding, fluid, rolling

Back

static

Front

Rougher surfaces have ...

Back

greater friction

Front

Weight=100N, Force_friction=20N

Back

μ=0.2

Front

When there is friction, the energy of an object's motion is converted into _______ energy.

Back

heat

Front

Which of the following is NOT an example of friction?

• using the brakes on your bike to slow you down
• putting your hand out the window
• a satellite traveling through deep space
• a hockey puck going across an ice rink

Back

a satellite traveling through deep space

Front

What makes a puck sliding on ice slow down?

Back

It rubs against the ice

Front

What is acceleration?

Back

a change in velocity (speed, direction, or both)

Front

What is the ultimate cause of friction?

Back

Nuclei of one substance attracting electrons of another substance.