MFE - Newton's Third Law

Newton's Third Law of Motion states that if one object exerts a force on another object,

the second object exerts a force of equal strength in the opposite direction on the first object.

Another way to say Newton's Third Law is that for every action

there is an equal and opposite reaction.

Your feet pushing down on the ground is an action force, and the ground pushing back is the

reaction force.

Do action-reaction forces always cancel each other?

No.

Momentum of a moving object describes its

mass and velocity.

Calculating momentum of a moving object is done by multiplying

mass and velocity.

The law of conservation of momentum states that

the total momentum of objects that interact does not change. (In the absence of other forces!)

Generally, when objects collide some momentum is

transferred from the object with more momentum to the one with less.

The units for measuring for momentum in SI units are

kg x m/s

When two objects interact, such as a bowling ball hitting a pin, the first object _______________________ momentum to the second.

transfers