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) =7-t# on #t in [0,4]#?
1 Answer
Mar 3, 2016
I found
Explanation:
I do not want to complicate it too much but I would integrate the acceleration to go back to the expression of velocity:
now we get the constant
so that
so the velocity will be:
that at
Average speed will be: