Question

A body of mass 200 kg having momentum 10 kgm/s. then what is kinetic energy
Please look carefully then solve not copy pest

Answer 1

Answer:-

$k_e = 5j$

Given :-

m = 200 kg

P = 10 kg m/s

To find :-

The kinetic energy of the body.

Solution:-

Momentum :- The product of mass and velocity of a body is known as momentum.

From definition ,

$\huge \boxed {P = mv}$

Now, put the value

→$10 = 200 \times v$

→$v = \dfrac{10}{200}$

→$v = \dfrac{1}{20}$

→$v = 0.05 m/s$

We have,

m = 200 kg

v = 0.05 m/s

Kinetic energy :- The energy possess by a body due to its motion is called kinetic energy.

The formula of kinetic energy is given by :-

$\huge \boxed{k_e = \dfrac{1}{2}mv^2}$

→$k_e = \dfrac{1}{2}\times 200 \times \dfrac{25}{10000}$

→$k_e = 100 \times \dfrac{25}{10000}$

→$k_e =0.25j$

hence, the kinetic energy of the body will be 0. 5j.