Question

A wagon weighing 1000 kg is moving with a
velocity 50 km/h on smooth horizontal rails. A
mass of 250 kg is dropped into it. The velocity
with which it moves now is
(a) 2.5 km/hour (b) 20 km/hour
(c) 40 km/hour (d) 50 km/hour

Answer 1

Answer:

The velocity

with which it moves now is(c)40kmph