Physics, asked by zirinrazel0107, 6 months ago

Q23. A body of mass 60 kg is moving with a speed 50 m/s. Find its kinectic energy. ,​

Answers

Answered by shivamsaurav47
1

Given question:

A body of mass 60 kg is moving with a speed 50m/s . Find it's kinetic energy?

Known :

m = 60kg

u = 0 m/s

v= 50m/s

Unknown:

  • Kinetic energy

Formula:

Kinetic energy =1/2(m×v²)

Solution:

we put the given value in this formula, so

=> K. E= 1/2(60×50²)

= 30× 2500

= 75000 kgm/s²

Hence, the kinetic energy of the body is 75000kgm/s or 75KJ.

More information :

  • the kinetic energy of an object is the energy that possesses due to it's motion.

Answered by snehitha2
1

Question :

A body of mass 60 kg is moving with a speed 50 m/s.

Find its kinetic energy

Answer :

Kinetic energy = 75 KJ

Given :

  • Mass of body, m = 60 kg
  • Speed of the body, v = 50 m/s

To find :

  • Kinetic energy

Solution :

  \underline{\underline{\bf Kinetic \ energy :}}

     ★   It is the energy possessed by an object because of its motion.

     ★   It is a scalar quantity i.e., it does not have direction.

     ★   Units : Joule (J)

The equation for Kinetic Energy is :

           \boxed{\bf KE=\frac{1}{2}mv^2}

 where

    m - mass of the body

     v - speed of the body

  • Mass of body, m = 60 kg
  • Speed of the body, v = 50 m/s

         

 \huge{\text{KE of the body}

            = \frac{1}{2} \times 60 \times 50^2 \\\\ = \frac{1}{2} \times 60 \times 2500 \\\\ =30 \times 2500 \\\\ =75000 \ J \\\\ = \text{75 KJ}

║ Kinetic Energy of the body = 75 KJ

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