# What is the average speed of an object that is moving at #12 m/s# at #t=0# and accelerates at a rate of #a(t) =5-3t# on #t in [0,4]#?

##### 1 Answer

May 4, 2017

#### Answer:

The average speed is

#### Explanation:

The speed is the integral of the acceleration

Plugging in the initial conditions

So,

and

The average speed is