# What is the average speed of an object that is moving at #9 m/s# at #t=0# and accelerates at a rate of #a(t) =2t-5# on #t in [1,4]#?

##### 1 Answer

Apr 1, 2017

The average speed is

#### Explanation:

The speed is the integral of the acceleration

Initial conditions are,

Therefore,

So,

The average velocity is