Amplify: Forces & Motion Review Questions

Front

In order for an object to speed up, the direction of the force is:

Back

in the same direction as the object's motion.

Front

How are speed and velocity different?

Back

Velocity includes direction.

Front

What is the frictional force of air against a moving object that causes it to slow down?

Back

Air Resistance.

Front

What is speed?

Back

How fast an object is moving.

Front

In order for an object to stop moving, the force must come from:

Back

the opposite direction as the object's motion.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the difference between mass and weight?

Back

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

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 acceleration?

Back

The rate of change of velocity of an object.