Question

Two parallel rail tracks run west to east . train A moves west with a speed of 90 km/h and train B moves east with a speed of 108 km/h . What is Vba and VgB​

Answer 1

Explanation:

  vBA = vB - vA

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

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

vg,B=vg−vB = 0 - 90$$

vg,B = -90 km/h

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

c. vm,g = vm,A + vAg = 18 - 54 = -36 km/h

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