User Forum

Subject :NSO    Class : Class 9

star_opt.jpeg Read the passage carefully and answer Q.

A train starts from rest and accelerates uniformly at 100 min_2 for 10 min. It then maintains a constant velocity for 20 minutes. The brakes are then applied and the train is uniformly retarded. It comes to rest in 5 minutes.

The maximum velocity retarded is

(A) 1000 m min-1

(B) 2000 m min-1

(C) 3000 m min-1

(D) 500 m min-1.

Post Your Answer