Question

two parallel rail tracks run north - south. Train A moves north with a speed of 15m/s. and train B moves south with a speed of 25m/s.
A, What is the velocity with respect to the ground? ​

Answer 1

Answer:

Velocity of Monkey with respect to ground is :–VM

Velocity of Monkey, with respect to train A is :−VA

Relative velocity of Monkey with respect to train A:−VMA

$$VMA = VM

−VA

Given;− Velocity of Monkey with respect to train $$A = VA = 54 Km/h = 54 x 5/18 m/s = 15 m/s$$

And Relative velocity,

of Monkey with respect to train $$A = VMA = -18 Km/h = -18 x 5/18 = -5 m/s$$

(as monkey running against the motion)

Therefore,

VMA=VM −VA

−5m/s=VM –15m/s

VM=−5m/s +15m/s

VM = 10 m/s$$

Hence,

option (A) is correct answer.

Explanation:

follow me

like my answer