Force and Motion

Front

What is the principle that explains why a sprinkler spins?

Back

Every action has an equal and opposite reaction.

Front

If a student pushes against a wall with 20 N of force, what force does the wall exert?

Back

20 N of force.

Front

What force opposes the motion of a sled sliding down a hill?

Back

Friction.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What happens to the weight of an object when measured on the Moon compared to Earth?

Back

The weight is less on the Moon due to lower gravity.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object.

Front

What is Newton's Third Law of Motion?

Back

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

Front

What does it mean for an object to be in equilibrium?

Back

The net force acting on the object is zero, resulting in no acceleration.

Front

What is the formula for calculating weight?

Back

Weight = mass × gravity.

Front

How does the density of a substance change with temperature?

Back

Most substances expand when heated and contract when cooled.