# An object has a mass of #6 kg#. The object's kinetic energy uniformly changes from #54 KJ# to #150 KJ# over #t in [0, 8 s]#. What is the average speed of the object?

##### 1 Answer

May 30, 2016

#### Answer:

#### Explanation:

Kinetic energy is given by the equation

The starting condition is

The end condition is

The average speed is