Question

Two parallel rail tracks run north-south. Train A moves north with a speed of 72 Kmh -1 and train B moves south with a speed of 90 Kmh -1 . What is the
(a) Velocity of B with respect to A ?
(b) velocity of ground with respect to B ?
(c) Velocity of monkey running on the roof of the train A against its motion( with a velocity of 28 Kmh -1 with respect to train A) as observed by a man standing on the ground. ​

Answer 1

Answer:

(a)_ -18 km\h

(b)_ -90km\h

(c)_. -44km\h

Step-by-step explanation:

(a). if two bodies A and B are travling with velocity v and u.

then,

velocity of A with respect to B = velocity of B with respect A = - | v-u |

(b). ground is at rest

so,

velocity of ground with repect to B = actual velocity of B with respect to

ground.

(c). again like first answer ............ -|v-u|