Question

Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 113rd of the initial velocity.

From ICSE 2014 Physics paper​

Answer 1

$❤ANSWER❤$

Given: Initial velocity =v; Final velocity =3v

Initial kinetic energy k1=21×m×v2

Final kinetic energy k2=21×m×(3v)2=91×21mv2

Change in kinetic energy =21mv2−91×21mv2

=21mv2(1−91)

=98×21×mv2

=98× Initial kinetic energy.

hope it will help you ✌

Answer 2

Answer:

yes from 10 class. beeeeeeee happy, thanks.