Question

If a ball strikes the ground with a force of $3N$, the force exerted by the ground on the ball is

• A. $6N$
• B. $3N$
• C. $2N$
• D. $0N$

Answer 1

The correct option is B $3N$

Newton's third law states that for every action, there is an equal and opposite reaction. The ball striking the ground is an action and the force exerted by the ground back to the ball is a reaction. The force on the ball by the ground will be equal in magnitude, but opposite in direction. Therefore, the force exerted by the ground on the ball is $3N$.