08 Forces and Momentum

Front

What is gravity?

Back

A noncontact force that attracts objects toward each other.

Front

What is the principle that states momentum is not lost in a closed system?

Back

Conservation of momentum.

Front

What type of force is equal in size and opposite in direction?

Back

Balanced force.

Front

What force causes objects to accelerate downward when thrown?

Back

Gravitational force.

Front

What is the term for the change of momentum from one object to another?

Back

Transfer of momentum.

Front

What is an example of a noncontact force?

Back

Gravity.

Front

What happens to the momentum of a ball that breaks into pieces?

Back

The total momentum remains the same before and after the break.

Front

What is an unbalanced force?

Back

A force that causes an object to accelerate because the forces acting on it are not equal.

Front

What is air resistance?

Back

A force that opposes the motion of an object through the air.

Front

What is the formula for momentum?

Back

Momentum = mass × velocity.