Question

The momentum and kinetic energy of a ball is numerically equal. The numeric
value of velocity in MKS system is
(a) 1 ms
(b) 2 ms
(c) 4ms
(correct answer is b why?)​

Answer 1

Explanation:

k.e=1÷2mv^2

momentum p=mv

hereke=p

1÷2mv^2=mv

m gets cancelled and v and v^2 gets cancelled.

v=2ms.