Question

a body of mass 15 kg possesses kinetic energy of 18.75 kj.find the velocity​

Answer 1

Given,

Mass of body=15 kg

Possessed kinetic energy=18.75 kj=18750 j

Formula,

K.e=1/2mu*u

18750=1/2*15*u*u

U=√2500

=50m/s

HOPE! It helps you.

Answer 2

Given,

Mass of a body = 15 Kg

Kinetic energy possessed by the body = 18.75 Kj

To find,

The velocity of the body.

Solution,

We can simply solve this numerical problem by using the following process:

Mathematically,

The kinetic energy of a body

= 1/2 × (mass of the body) × (velocity)^2

{Statement-1}

According to the question;

Kinetic energy possessed by the body = 18.75 Kj

=> 1/2 × (mass of the body) × (velocity)^2 = 18.75 Kj

=> (velocity)^2 = (2 × 18750 J)/(15 Kg)

{Since 1 KJ = 1000 J}

=> (velocity)^2 = (37500)/(15) = 2500 = 2500

=> velocity = √2500 = 50

=> velocity of the body = 50 m/s

Hence, the velocity of the body is equal to 50 m/s.