Question

If momentum of an object is increased by 10% then its kinetic energy will increase by
(1) 20%
(2) 21%
(3) 40%
(4) 19%​

Answer 1

Answer:

momentum (p) = √(2*mass*ke)

x = √(2*mass*ke)

10x=10( 2 * mass * ke)

10x= 20ke(mass)

Therefore Kinetic Energy increases by 20% (option 1) in ideal conditions however practically some energy is lost in overcoming friction and/or resistance.

Hope this helps you.