# What is the average speed of an object that is still at #t=0# and accelerates at a rate of #a(t) =12-2t# from #t in [3, 6]#?

##### 1 Answer

Nov 8, 2016

Given

Acceleration

where t = integration constant

Now by the given condition

at t=0, v(0)=0

So

Hence

Average speed in time [3,6] is