Question

6. A train 175 m long is travelling at a speed of
54 km/h and a man on the road parallel to
the railway track is cycling at a speed of
9 km/h. Find the time the train will take to
pass the man if they are moving
(1) in the opposite direction
(i) in the same direction​

Answer 1

Answer:

11th

Physics

Motion in a Plane

Velocity

A 175 m long train is trave...

PHYSICS

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Asked on November 22, 2019 by

Sathish Sompura

A 175 m long train is travelling along a straight track with a velocity 72 km

−1

h. A bird is flying parallel to the train in the opposite direction with a velocity 18 km

−1

h. The time taken by the bird to cross the train is :

MEDIUM

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ANSWER

Given,

Length of train=175m

Velocity of bird=18kmph

Velocity of train=72kmph

Taking everything relative to train.

Velocity of bird with respect to train=18+72=90kmph=25ms

−1

Length to be covered by bird wrt train to cross the train=175m

t=

v

s

=

25

175

=7

t=7s

Step-by-step explanation:

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