What is the average speed of an object that is still at #t=0# and accelerates at a rate of #a(t) =t^2-4# from #t in [2, 3]#?
Acceleration of the object is given as,
So,velocity will be
Hence,displacement will be,
Hence,displacement with in t=2 to t=3 will be -4.58 meter
Now here distance=displacement that has happened in between 2 sec and 3 sec
Hence average speed with in this duration=(total distance covered/total time)