If a ball hits the ground with a force of 4 N, the force exerted by the ground on the ball is ___ N.
4

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Solution

The correct option is A 4
Newton’s third law of motion 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 at the ball is the 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 4 N.

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Q. Question 4
A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows to a stop because
(a) the batsman did not hit the ball hard enough.
(b) velocity is proportional to the force exerted on the ball.
(c) there is a force on the ball opposing the motion.
(d) there is no unbalanced force on the ball, so the ball would want to come to rest.

A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows to a stop because

(a) the batsman did not hit the ball hard enough.

(b) velocity is proportional to the force exerted on the ball.

(d) there is no unbalanced force on the ball, so the ball would want to come to rest.

A football of mass $0.5 k g$ moving with a velocity of $10 m s^{- 1}$ hits a pole and, the ball turns back and moves with a velocity of $20 m s^{- 1}$ . Find the impulse and the force exerted on the ball if the force acts for $0.02 s$ .

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If a ball hits the ground with a force of 4 N, the force exerted by the ground on the ball is ___ N.4

If a ball hits the ground with a force of 4 N, the force exerted by the ground on the ball is ___ N.
4