Question

If the momentum of a body moving with constant velocity is four times its ke ,its velocity is

Answer 1

Answer:

Velocity=1/2m/s

Explanation:

Given:

momentum p=4*(Kinetic Energy)

Find: Velocity(V)=?

Solution:

We know that,

Kinetic Energy, KE= p²/2m

(∵P=momentum, m=mass)

According to question:-

p=4*K.E

=4*P²/2m

∴P=m/2

or, mv=m/2(∵P=mv)

∴V=1/2=.5m/s

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