Newton’s first law says that if motion changes, then a force is exerted. Describe a collision in terms of the forces exerted on both objects.

In collision between equal-mass objects, each object experiences the same acceleration, because of equal force exerted on both objects.

Explanation:

In a collision two objects, there is a force exerted on both objects that causes an acceleration of both objects. These forces that act on both objects are equal in magnitude and opposite in direction.

Thus, in collision between equal-mass objects, each object experiences the same acceleration, because of equal force exerted on both objects.

In a collision, the two colliding objects each exert a force on the other.

explanation:

newton's third law, for every action there is an equal and opposite reaction.

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