Question

Starting from rest, Leena paddles her bicycle to attain a velocity of 6 m/s in 30 seconds. Then he applies brakes so that the velocity of the bicycle comes down to 4 m/s in the next 5 seconds. Calculate the acceleration of the bicycle in both the cases.

Answer 1

intial velocity=0
final velocity=6
time =30s
a=u+v/t
0+6/30=1/5
2case
intial velocity=6
final velocity=4
time=5s
a=v-u/t
6-4/5=2/5