A rubber ball is dropped from a height of 2 m. If there is not lo
| A rubber ball is dropped from a height of 2 m. If there is not loss of velocity after rebounding the ball will rise to a height of
A. 1 m
B. 2 m
C. 3 m
D. 4 m
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
Conservation of energy:
\(P.{E_1} + K.{E_1} = P.{E_2} + K.{E_2}\)
As there is no loss of velocity so
\(K.E = \frac{1}{2}m{v^2} \Rightarrow K.{E_1} = K.{E_2}\)
\(P.{E_1} = P.{E_1} \Rightarrow {h_1} = {h_2} \Rightarrow {h_2} = 2m\)