Answer: Mass = 2 kg
Step-by-step explanation:
Given - Kinetic energy (K.E) = 100 Joules
Velocity of the body (V) = 10 m/s
To Find - Mass of the body = ?
Solution-
Kinetic energy is a form of energy caused by the motion of the object and it is directly proportional to mass of the object and its velocity's square.
thus, we have a equation for kinetic energy that is
K.E = 1/2 *M *V^2
( where M is the mass of the object and V is the velocity of the object)
IN THE GIVEN CASE
All the quantities are in S.I unit , so there's no need for conversion.
therefore, applying the formula for K.E here we get
K.E = 1/2 *M *V^2
100 = 1/2 *M *10^2
200 = 100*M
M = 200/100
M = 2 kg
(This will be considered as the final result. As, the initial units are in SI system, we have to use SI unit for the final answer also. And, the SI unit of mass is kg)
Hence mass of the body is 2kg.