Unit 2 -Test Review

Front

What is velocity?

Back

Velocity is a vector quantity that has both magnitude and direction.

Front

What happens to a car's speed when brakes are applied and then released on level ground?

Back

The car continues moving at the speed it was at when the brakes were released, unless acted upon by another force.

Front

How does mass affect acceleration when a force is applied?

Back

If an object's mass doubles, its acceleration halves, assuming the same force is applied.

Front

When are displacement and distance traveled the same?

Back

Displacement and distance traveled are the same when the object travels in a straight-line path.

Front

What can occur if an object is accelerating?

Back

An object can change its speed, change its direction, or both. It cannot remain motionless if it is accelerating.

Front

Define a vector quantity.

Back

A vector quantity is a physical quantity that has both magnitude and direction.

Front

Define a scalar quantity.

Back

A scalar quantity is a physical quantity that has only magnitude and no direction.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, force equals mass times acceleration (F = ma).

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity includes both speed and direction.