According to newton’s third law of motion, which are equal?
momentum and velocity
collision time and stop time
mass and momentum
action force and reaction force

Action force and reaction force

Explanation:

According to newton's third laws of motion, the action of a body is always associated with the reaction of the other body.

But these two forces don't act on the same body.

For example,

If a man hits on the wooden board with his fist, he exerts a certain amount of force on the surface of the board. Consider it as action force dented by 'Fa'.

The wooden board exerts a similar force that is equal in magnitude but in the direction opposite to the applied force on his fist. Consider it as action force dented by 'Fr'.

In both cases, the force is acting on different bodies. It is mathematically expressed as

                                  Fa = - Fr

the answer is kevlar

i think the answer is a, hope this : )