Question

A BODY IS MOVING WITH VELOCITY V . THE MAGNITUDE OF KINETIC ENERGY IS EQUAL TO ITS MOMENTUM . FIND THE VELOCITY WITH WHICH IT Is MOVING

Answer 1

First, momentum = mv

K.E. =1/2mv2

Therefore, your equation could be rewritten as

2mv=1/2mv2

Simplifying this, since mass and velocity should both be non-zero here

2=1/2v

Dividing both sides by 1/2

v=4