Contact Forces Review # 1

Front

What type of energy increases with more mass in a system?

Back

Kinetic energy.

Front

If equal forces are applied to balls resting on a table, which ball will move?

Back

The ball that is not being countered by an equal force (Ball 2).

Front

Where is the most kinetic energy located in a roller coaster model?

Back

At the lowest point of the track (usually Ball 2).

Front

What happens in a tug-of-war if both teams pull with equal force?

Back

The rope will remain stationary.

Front

Why does a feather fall slower than a hammer when dropped?

Back

Air resistance causes the feather to slow down.

Front

What is the definition of contact forces?

Back

Forces that occur when two objects are in physical contact with each other.

Front

What is Newton's third law of motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is the effect of mass on kinetic energy?

Back

Kinetic energy increases as mass increases, given the same velocity.

Front

What is air resistance?

Back

A force that opposes the motion of an object through the air.

Front

How does gravity affect falling objects?

Back

Gravity pulls all objects towards the Earth, but air resistance can slow them down.