Question

Average speed for first four seconds as V =6t-3t^2

Answer 1

s=3t²-t³

At t=0 s= 0

At t=1 s=1

At t=2 s=4

At t=3 s=0

At t=4 s=-16

Average speed = total distance travelled/total time= 1+3+4+16/4=24/4=6m/s