Front

What causes an object to move?

Back

Unbalanced forces.

Front

What explains why a skateboard rolls down a hill and eventually stops?

Back

The presence of an unbalanced force (e.g., friction) can cause a moving object to stop.

Front

What does it mean when more force is required to accelerate an object with more mass?

Back

This describes Newton's second law, the law of acceleration.

Front

What happens when a hammer puts force on a nail?

Back

The nail puts an equal and opposite force on the hammer.

Front

What force prevents you from slipping on the floor?

Back

Friction between the sole of your shoe and the floor.

Front

What is Newton's first 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

How does mass affect acceleration according to Newton's second law?

Back

Acceleration is inversely proportional to mass; more mass requires more force to achieve the same acceleration.

Front

What is the relationship between action and reaction forces?

Back

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

Front

What role does friction play in motion?

Back

Friction opposes the motion of objects and can cause them to stop.

Front

What is the formula for Newton's second law?

Back

F = ma (Force equals mass times acceleration).