Imagine the running deer has a mass of 100 kg and is running at a speed of 8 m/s. What is the deer’s kinetic energy, in joules?

3200 joules.

Explanation:

Mass of deer = 100kg

Speed of running deer = 8 m/s

Kinetic energy = ?

Kinetic energy is the energy possessed by a moving body (deer). It is measured in joules.

Thus, Kinetic energy = 1/2 x (Mass x velocity^2)

K.E = 1/2 x (100kg x (8m/s)^2)

K.E = 1/2 x (100 x 64)

= 0.5 x 6400

= 3200 joules

Thus, the kinetic energy of the running deer is 3200 joules.

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement