8.1 Lessons 8 & 9 - friction and air resistance

Front

What happens to the potential energy of an object as it is lifted higher?

Back

It increases.

Front

Without friction, what would happen to a runner?

Back

He wouldn't be able to run because his foot would slide and he would fall.

Front

What is air resistance?

Back

A force that slows down objects moving through the air.

Front

What is friction?

Back

A force that resists motion between surfaces in contact.

Front

If you are unable to make it to the bottom of the slide, who won the tug of war between sliding friction and gravity?

Back

Sliding friction won.

Front

Define potential energy.

Back

The energy possessed by an object due to its position or height.

Front

What role does friction play in motion?

Back

Friction opposes the motion of objects, affecting their speed and direction.

Front

How does air resistance affect falling objects?

Back

Air resistance slows down the acceleration of falling objects.

Front

What factors affect the amount of friction between two surfaces?

Back

The nature of the surfaces in contact and the force pressing them together.

Front

Explain the relationship between gravity and sliding friction on a slide.

Back

Gravity pulls objects down the slide, while sliding friction opposes this motion.