Answer to Question #12608 in Mechanics | Relativity for jeena steephen

Question

a train starting from rest picks up a speed of 20m/s in 200 seconds it continuous to move at the same rate for the next 500 sec and is then brought to rest in another 100 seconds
(i) plot the speed time graph
(ii) from the spped time graph calculate
(a) uniform rate of acceleration
(b) uniform rate of retardation
(c) total distance covered before sloping
(d) average speed over the total journey
(e) acceleration between 200 seconds to 700 seconds