Train 'A' moves north with a speed of 54 km/hr and a monkey is running on its roof at a speed of 18 km/hr in opposite direction. The speed of the monkey with respect to ground in m/s is
Speed of train A (va) =54 km/hr=15 m/s
Speed of monkey with respect to train = vma
Let the speed of monkey with respect to ground = vm
Speed of monkey with respect to train 'A', vma = vm−va
vm=15−5=10 m/s