Question

A particle start from rest with constant acceleration for 100 s, then move with constant velocity for 5 min. Finally, particle retards uniformly and come to rest in 150 s. 

(i) Draw v-t graphs 

(ii) If total distance travelled by the particle is 4250 m then find maximum speed. 

(iii) Also, find the value of acceleration and retardation.

Answer 1

Area under the v-t graph in the given time interval is equal to displacement of the particle in the given time interval. 

(ii) Distance travelled = Area under v – t graph