Question

8.
What is the change in kinetic energy of a body if its momentum is increased
four times ?​

Answer 1

Answer:

P is proportional to the square root of kinetic energy. Since 2 and m are considered as constants. Therefore, we can say that kinetic energy increased by four times. Therefore, when the kinetic energy increases by four times, then the moment will increase by two times.

Hope this helps !!

Answer 2

Answer:

Let the initial velocity be v , so final will be 4v.

let the KE

initial

=

2

mv

2

KE

final

=

2

m(4v)

2

so KE

final

=16×KE

initial