Forces and Cause and Effect Exam

Front

What is the definition of 'cause'?

Back

The reason something happens.

Front

What is friction?

Back

A force that occurs when two surfaces rub against each other.

Front

What is the difference between speed and velocity?

Back

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

Front

What happens to an object's velocity when it changes direction?

Back

The velocity changes direction but may keep the same speed.

Front

What is a force?

Back

A push or pull that can change the motion of an object.

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 an example of a contact force?

Back

Friction is an example of a contact force.

Front

What is an example of a non-contact force?

Back

Gravity is an example of a non-contact force.

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the motion of an object.

Front

What is the effect of unbalanced forces on an object?

Back

Unbalanced forces cause an object to accelerate or change its motion.