Question

A rubber ball falling from a height of 6m rebounds from a hard floor to a height 3 m. the %loss of energy during the impact is?? ​

Answer 1

Loss of Kinetic Energy is given by:

%Loss of K.E.=

h

1

h

1

−h

2

×100

Here, h

1

=5 m, h

2

=3.5 m

⇒%Loss of K.E.=

5

5−3.5

×100=

5

1.5

×100=30%