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) =5-2t# on #t in [0,5]#?
Average speed is the mean of initial velocity and final velocity.
to solve this question we need to take out final velocity (
so lets proceed.
therefore accereleration at 5 seconds is -5
by putting values this we get
I haven't showed the actual mathematics calculation as i hope you can easily make it,she see the procedure.