Question

Suppose you increase your walking speed from 6 m/s to 15m/s in a period of 3 seconds what is your acceleration

Answer 1

avg acceleration; under constant acceleration condition only; = Vf-Vi/time
a=Vf-Vi/time=(15m/s-6m/s)/(3s)=
(9m/s)/(3s)=3m/s^2

Hope this helps. Thanks.