An electric train leaves a station starting from rest and attains a speed of 72km/hr in 10 second. It travels at that speed for 120 seconds. Then it undergoes uniform retardation for 20 seconds to come to halt at the next station calculate :

Question

a) distance between the train stations.
b) the average velocity of train.

Answer 1

hint - it decelerates at half the rate it accelerated.

Now recall your basic equation of motion:

s(t) = vt + 1/2 at^2

and apply it to the three intervals.

Answer 2

Ana is yes
Com