Physical Science Chapter 2: Investigating Motion

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction.

Front

What happens to the acceleration of an object moving at a constant velocity?

Back

The acceleration is zero.

Front

What must another car do to have the same velocity as a car traveling at 70 km/hr west?

Back

It must travel at the same speed and in the same direction.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What allows you to pick up a piece of paper?

Back

The friction produced by your fingerprints.

Front

What is the relationship between forces?

Back

Forces always work in pairs.

Front

What type of friction occurs between one surface and another that is round?

Back

Rolling friction.

Front

What is acceleration?

Back

Acceleration is the rate at which an object changes its velocity.

Front

What is the difference between speed and velocity?

Back

Speed is how fast an object is moving, while velocity includes both speed and direction.

Front

What is a force?

Back

A force is a push or pull that can cause an object to move, stop, or change direction.