Question

two parallel rail track run from north to south on one track train A is moving from north to south with a speed of 15m/s on the other track, train B is moving from south to north with a speed of 25 m/s find the relative velocity of B with respect to A ,the ground with respect to B and A with respect to ground
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Answer 1

Answer:

.

v

BA

=

v

B

-

v

A

Hence, velocity of train B w.r.t train A is 144 km/h toward south.

b. Velocity of ground w.r.t. B

v

g,B

=v

g

−v

B

= 0 - 90$$

v

g,B

= -90 km/h

Hence, velocity of ground w.r.t train B is 90 km/h towards north.

c.

v

m,g

=

v

m,A

+

v

Ag

= 18 - 54 = -36 km/h

Hence, velocity of monkey will be 36 km/h toward north.