If two cars collide head-on with equal force, what will be the effect on their motion?

A.) Both cars exert forces on each other that are equal in magnitude but in opposite directions.
B.) One car exerts a stronger force than the other but in the opposite direction.
C.) One car exerts a stronger force than the other but in the same direction.
D.) Both cars exert forces on each other that are equal in magnitude and in the same direction.

A.) Both cars exert forces on each other that are equal in magnitude but in opposite directions.

To determine the effect on their motion, we need to consider Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.

When two cars collide head-on, they exert forces on each other. According to Newton's third law, these forces are equal in magnitude and opposite in direction. Therefore, the correct answer is A.) Both cars exert forces on each other that are equal in magnitude but in opposite directions.