Question

If the kinetic energy of a body is four times the
numerical value of its momentum, then velocity of the
body is
4 m/s
8 m/s
2 m/s
6 m/s​

Answer 1

Answer:

Explanation:

The relation between kinetic energy (K )and momentum (p) is

p=2mK−−−−√

when m is mass of body.

∴(p2p1)2=k2k1=4

hence p2=2p1

∴pnew=2pinitial