Question

If a ball of mass 0.1 kg hits the ground from the height of 20 m and bounce back to the same height then find out the force exerted on the ball if the time of impact is 0.04 sec (g = 10 m/s2)

• A. $100N(+\hat{j})$
• B. $200N(+\hat{j})$
• C. $100N(+\hat{-j})$
• D. $1000N(+\hat{j})$

Answer 1

Answer: (A)

$100N(+\hat{j})$

Answer 2

The correct option is(A): $100N(+\hat{j})$