Question

If a bat hits a ball with a 1000-N force, what force does the ball exert on the bat?

Answer 1

Answer: The ball will exert 1000 N of force in opposite direction on the bat.

Explanation:

We are given a bat which hits the ball with a force of 1000 N and we need to find the force which the ball exerts on the bat. This phenomena is very well explained by Newton's third law which states that every action has an equal and opposite reaction.

This means that the reaction force will always have an action force which is equal in magnitude.

Hence, the ball exerts an equal magnitude of force on bat which the bat exerts on ball but the force will be acted on in the opposite direction.

So, the ball will exert 1000 N of force in opposite direction on the bat.

Answer 2

Same magnitude (1000N) and opposite direction 
you may also answer -1000 N