Front

What happens when two surfaces rub against each other?

Back

The irregularities of one surface get caught on those of the other surface.

Front

What is the force exerted by a baseball on a bat if the bat hits the baseball with a force of 100 Newtons?

Back

100 Newtons, opposite direction.

Front

If a force of 45 N is needed to move a wooden block at constant velocity, what is the applied force?

Back

45 N.

Front

What is the acceleration of an object if a force of 45 N is applied to move it at constant speed?

Back

0 m/s/s.

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

Define friction.

Back

Friction is the force that opposes the relative motion of two surfaces in contact.

Front

What is the relationship between force, mass, and acceleration according to Newton's Second Law?

Back

F = ma (Force equals mass times acceleration).

Front

What is the action-reaction pair in Newton's Third Law?

Back

For every action, there is an equal and opposite reaction.

Front

What is the net force acting on an object at constant velocity?

Back

The net force is zero.

Front

How does increasing mass affect acceleration if the force is constant?

Back

Increasing mass decreases acceleration.