Question

A monkey running on the roof of the train A against its motion with a velocity of 18km per hour with respect to train A as observed by a man standing on the ground ​

Answer 1

Answer:

The velocity of money running on the train

The velocity of a monkey with respect to ground is =−V

M

The velocity of a monkey with respect to trainA=V

A

The relative velocity of a monkey with respect to train A V

MA

V

MA

=V

M

−V

A

Given the velocity of a monkey with respect to train A =V

A

=54km/h

=15m/s

And the relative velocity of a monkey with respect to train A

V

MA

=−18km/h

=−18×

18

5

=−5m/s

Therefore

V

MA

=V

M

−V

A

−5m/s=V

M

−15m/s

V

M

=(−5+15)m/s=10m/s

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Answer 2

Answer:

please refers to the image given above