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15. A in 50 s. Find : (i) the maximum velocity reached, (ii) the retardation in the last50 s, (iii) the total distance travelled, and (iv) theaveragetrain starts from rest and accelerates uniformly ata rate of 2 m s-2 for 10 s. It then maintains aconstant speed for 200 s. The brakes are thenapplied and the train is uniformly retarded andcomes to rest velocity of the train.Ans. (i) 20 m s-1, (ii) 0.4 m s?,(iii) 4600 m, (iv) 17.69 m s-1 |
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Answer» train starts from REST and ACCELERATES uniformly at a rate of 2m/s^2 for 10S. It then MAINTAINS a constant speed for 200s. The brakes are then applied and the train is uniformly retarded and comes to rest in 50s. Find : ( i ) the maximum velocity REACHED, ( ii ) the retardation in the last 50s, ( iii ) the total distance travelled, and ( iv ) th |
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