if a train travelling at 72 kilometre per hour is brought to rest by applying brakes in a distance of 200 m then the radiation of the train is , a 20 metre per second , b 10 metre per second , c two metre per second, d one metre per second
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Answered by
1
Answer:
u=72
h
km
=72×
18
8
=20m/s
NOw v
2
=u
2
+2as
0=(20)
2
+2a(200)
0=400+400a
400a=−400
retardation =−a=1m/s
2
Answered by
1
Answer:
If a train travelling at 72 km/h is to be brought to rest at a distance of 200 m then its retardation should be :
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