Question

A boy of mass 50 kg on motor bike is moving with 20 m/s. What is his
kinetic energy?​

Answer 1

Answer:

f=m*a

f=50 *20

f=1000kgm/s

so it is the kinetic energy

hope it helps you

Answer 2

Before, finding the answer. Let's find out how we can find the answer.

• In this question, we are asked to find the Kinetic energy of the motorbike.
• So, to find Kinetic Energy, we have to use the formula of :

$\boxed { \sf Kinetic \: Energy = \frac{1}{2} m v^2}$

Here, we are taking as,

• M = 50 g
• V = 20 m/s

____________________________

Given :

• Mass = 50 g
• Velocity = 20 m/s

To find :

• Kinetic Energy

Solution :

We know that,

${ \sf Kinetic \: Energy = \dfrac{1}{2} m v^2}$

                      $\sf{ = \dfrac{1}{2} \times 50 \times 20^2}$

                      $\sf{ = \dfrac{1}{2} \times 50 \times 400}$

                      $\sf{ = \dfrac{1}{2} \times 20000}$

                      $\sf{ = \dfrac{1 \times 20000}{2} }$

                      $\sf{ = \dfrac{ 20000}{2} }$

                      $\sf = 10000$

Therefore, the Kinetic Energy of the MotorBike is 10000 J.