Question

a train starts from rest and accelerates uniformly for 20 seconds to attain a velocity of 90 kilometre per hour if Travels at constant velocity for 15 minutes get driver applies brakes to a stop the train in next 5 seconds find the total displacement of the train

Answer 1

first accn=1.25sec
s=ut+1/2at2
0*40+1/2*1.25*40
50