Question

A body of mass 50kg has a momentum of 1000 kg . Calculate its kinetic energy

Answer 1

Explanation:

hope it helps you.hope

Answer 2

Answer:

10000J

Explanation:

Given :

Mass = 50kg

Momentum = 1000kg m/s

To Find :

Kinetic energy(K.E)

Solution :

We know :-

$\sf{}p=mv$

Here,

Momentum = p

Mass = m

v = velocity

$\sf{}\implies 1000= 50 \times m$

$\sf{}\implies \dfrac{1000}{50}=m$

$\sf{}\therefore v=20$

$\sf{}We\ know\ K.E =\dfrac{1}{2}mv^2$

Put their values and solve it

$\sf{}K.E=\dfrac{1}{2}\times 50\times(20)^2$

$\sf{}\implies \dfrac{1}{2}\times 50\times400$

$\sf{}\implies\dfrac{1}{1}\times 50\times200$

$\implies \sf{}50\times200$

$\sf{}\therefore 10000J$