Question

Find mass when kinetic energy is 1.6 J and velocity is 0.2 m/s

Answer 1

Answer:

4kg

Explanation:

Given parameters:

Kinetic energy  = 1.6J

Velocity  = 0.2m/s

Unknown:

Mass of the body = ?

Solution:

The kinetic energy of a body is the energy due to the motion of the body.

It is mathematically expressed as;

  Kinetic energy = $\frac{1}{2}$  m v²

m is the mass

v is the velocity

          1.6  =  $\frac{1}{2}$  x 0.2 x v²  

          1.6  = 0.1v²

         v²   = 16

          v  = 4kg