Amplify: Forces & Motion Study Guide

Front

What is a force?

Back

A push or pull that can cause motion.

Front

What is required to change the velocity of an object?

Back

A force.

Front

In which direction must a force act to stop an object in motion?

Back

The opposite direction as the object's motion.

Front

What happens when two objects with different masses collide?

Back

The direction and magnitude of the force exerted depend on their masses and velocities.

Front

What is the relationship between force and motion?

Back

Force is necessary to change the state of motion of an object.

Front

What is velocity?

Back

The speed of an object in a specific direction.

Front

What is acceleration?

Back

The rate of change of velocity of an object.

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 a net external force.

Front

What is Newton's Second 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 (F=ma).

Front

What is Newton's Third Law of Motion?

Back

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