Two parallel rail tracks run north-south. Train A moves due north with a speed of 54 km h-1
and train B
moves due south with a speed of 90 km h-1. A monkey runs on the roof of train A with a velocity of 18
km/h w.r.t. train. A in a direction opposite to that of A. Calculate the
(a) relative velocity of B with respect to A
(b) relative velocity of ground with respect to B
(c) velocity of a monkey as observed by a man standing on the ground
(d) velocity of monkey as observed by a passenger of train B
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Answered by
24
Answer:
Step-by-step explanation:
Train A moves due north with a speed of 54 km/h
train B moves due south with a speed of 90 km/h
A monkey runs on the roof of train A with a velocity of 18 km/h w.r.t. train in opposit direction
=> Monkey Speed = 18 - (-54) = 72 km/Hr South
relative velocity of B with respect to A = 90 -(-54) = 144 km/Hr South
relative velocity of ground with respect to B = 0 - 90 = -90 km/hr South = 90 km/hr North
velocity of a monkey as observed by a man standing on the ground = 72 km/Hr South
velocity of monkey as observed by a passenger of train B
= 72 - 90 = -18 km/h South = 18 km/Hr North
Answered by
2
Train A moves due north with a speed of 54 km/h
train B moves due south with a speed of 90 km/h
A monkey runs on the roof of train A with a velocity of 18 km/h w.r.t. train in opposit direction
=> Monkey Speed = 18 - (-54) = 72 km/Hr South
relative velocity of B with respect to A = 90 -(-54) = 144 km/Hr South
relative velocity of ground with respect to B = 0 - 90 = -90 km/hr South = 90 km/hr North
velocity of a monkey as observed by a man standing on the ground = 72 km/Hr South
velocity of monkey as observed by a passenger of train B
= 72 - 90 = -18 km/h South = 18 km/Hr North
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