Question

a ball of mass 100g dropped from a height and reaches ground in 4sec.After hitting the ground,it rebounds with 80%of its K.E. .Find the height at which ball reaches after rebound.Pls someone send exact answer of this question.​

Answer 1

Which class question is this ??

Answer 2

Answer:

Height will be 10 cm

Step-by-step explanation:

Use K.E formula 1/2mv2 u will get 800J as K E

Then using s= ut + 1/2at2 u will get your answer