Force and Motion Review

Front

What is the unit of force?

Back

newton (N)

Front

Balanced forces do not change the object's speed or __________.

Back

direction

Front

What describes an object moving with constant velocity?

Back

The object is moving with constant velocity.

Front

According to Newton's second law, which object requires the least amount of force to accelerate?

Back

skateboard

Front

Why does an apple fall from a tree?

Back

the gravitational attraction between the apple and Earth

Front

What is force?

Back

A push or pull on an object.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is acceleration?

Back

The rate of change of velocity of an object.

Front

What is the difference between speed and velocity?

Back

Speed is scalar (magnitude only), while velocity is vector (magnitude and direction).

Front

What is inertia?

Back

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