Which would best describes what occurs when a ball is thrown against a wall? a) the ball will not bounce off the wall. b) the ball hits the wall hard enough to bounce off of it. c) the wall is stronger than the ball and neither exerts any forces. d) the ball exerts a force on the wall and the wall exerts a force back.

D)The ball exerts a force on the wall and the wall exerts a force back.

Explanation:

Newton's third law of motion states that:

"When an object A exerts a force on another object B, then object B exerts an equal and opposite force on object A"

In this problem, we can identify (for instance) object A with tha ball and object B with the wall. Therefore, if we apply Newton's third law, we get:

The ball (object A) exerts a force on the wall (object B), therefore the wall (object B) exerts an equal and opposite force on the ball (object A). So, option D is the correct one.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.