Question

two parallel rail tracks Run North and South train name of north with the speed of human kilometre per hour and train demu South with a speed of 90 km per hour the velocity of a monkey running on the roof of train against its motion with velocity of 18 km per hour write Rene as observed by man travelling in train B is (a) 20ms¹ b)25 c) 30 d) 35​

Answer 1

Answer:

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