Question

The body of mass 2 kg having momentum

20 kg m/s . The kinetic energy of the body is​

Answer 1

HEY MATE..

Momentum = mv =20kg m/s

and m= 2kg (given)

So, v=20/2=10m/s

K.E. = 1/2 mv²

=2×10²/2=200/2=100

$\bold{\red{K.E.= 100Joule.}}$

i hope it is helpful..

Answer 2

Given

Momentum = mass x velocity

mass = 2 kg

momentum = 20 m/s

Velocity = momentum/mass

= 20/2

= 10 m/s

Kinetic energy = 1/2 mv²

= 1/2 × 2 × 10²

= 1/2 × 2 × 10 × 10

= 100 J.