Question

a remote control toy jet fighter has a mass of 5 kg and can travel up to 60 m/s. what is the kinetic energy of the toy jet fighter at this speed?

Answer 1

Answer:

9000J

Explanation:

Given parameters:

Mass of the jet fighter  = 5kg

Velocity  = 60m/s

Unknown:

Kinetic energy of the jet fighter  = ?

Solution:

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

It is mathematically expressed as;

    K.E  = $\frac{1}{2}$ m v²

m is the mass

v is the velocity

 So;

     K.E  =  $\frac{1}{2}$  x 5 x 60²  = 9000J