Physics Semester A review

Front

What is friction?

Back

Friction is the action of one surface or object rubbing against another, which opposes the motion of the objects.

Front

What does a graph showing positive velocity that's getting slower indicate?

Back

It indicates that the object is moving in a positive direction but is decelerating.

Front

What does a graph showing negative velocity that's getting faster indicate?

Back

It indicates that the object is moving in a negative direction and is accelerating.

Front

What does it mean when an object is stationary?

Back

It means the object is not moving and has a velocity of zero.

Front

What does it mean when an object is accelerating?

Back

It means the object's velocity is changing over time, either increasing or decreasing.

Front

What is the significance of a head start in a race?

Back

A head start means one runner begins the race ahead of the others, giving them an advantage.

Front

What is the formula for force?

Back

F = ma, where F is force, m is mass, and a is acceleration.

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 is a vector quantity that includes both speed and direction.

Front

What is the concept of acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time.

Front

What does a negative velocity indicate?

Back

A negative velocity indicates that the object is moving in the opposite direction to the defined positive direction.