Question

when brakes are applied to a bus, the retardation produced is 25m/s^2and the bus takes 20 sec to stop. calculate the initial velocity of bus .the distance traveled by bus during this time

Answer 1

u=?
v=0
a=-25m/s2
t=20s
v=u+at
O=u+-25*20
-u=-500
u=500
thus initial velocity of the bus is 500m per second