Question

6. A dog can run briefly with a velocity of 12.0 m/s. Suppose a cheetah with a mass of 15 kg runs at this

speed. What is the dog's kinetic energy?

Answer 1

1080J

Step-by-step explanation:

Given parameters:

Velocity of cheetah = 12m/s

Mass of the dog = 15kg

Unknown:

Kinetic energy = ?

Solution:

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

It is mathematically given as;

K.E =
`(1)/(2)` m v²

Now, insert the parameters and solve;

K.E =
`(1)/(2)` x 15 x 12² = 1080J