CH 3 | Forces Review

Front

What does friction depend on?

Back

Friction depends on the weight of the objects pressing together.

Front

What do you do with two forces going in the same direction?

Back

You add the forces.

Front

What happens to a rocket in space when its power dies out?

Back

It keeps floating and moving in space forever unless acted upon by an unbalanced force.

Front

Which object is harder to stop when moving at the same speed: car, fire engine, frisbee, or stroller?

Back

Fire engine is harder to stop.

Front

Which law explains why a boat moves in the opposite direction when someone jumps to shore?

Back

3rd Law of Motion.

Front

What is Newton's 1st Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.

Front

What is Newton's 2nd Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

What is the formula for calculating force?

Back

Force = Mass x Acceleration (F = ma).

Front

What is the role of gravity in motion?

Back

Gravity is a force that attracts two bodies towards each other, affecting their motion.