A wagon weighing 1000 kg is moving with a velocity 50km/h on smooth ho – McqOptions

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1.	A wagon weighing 1000 kg is moving with a velocity 50km/h on smooth horizontal rails. A mass of 250 kg is dropped into it. The velocity with which it moves now is [MP PMT 1994]
A.	2.5 km/hour
B.	20 km/hour
C.	40 km/hour
D.	50 km/hour
Answer» D. 50 km/hour

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