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
Answer: Option C
:
C
Initially the wagon of mass 1000 kg is moving with velocity of 50 km/h
So its momentum =1000×50kg×kmh
When a mass 250kg is dropped into it. New mass of the system = 1000+250 = 1250 kg
Let v is the velocity of the system.
By the conservation of linear momentum : Initial momentum = Final momentum
1000×50=1250×v
v=50,0001250=40kmh.
Was this answer helpful ?
:
C
Initially the wagon of mass 1000 kg is moving with velocity of 50 km/h
So its momentum =1000×50kg×kmh
When a mass 250kg is dropped into it. New mass of the system = 1000+250 = 1250 kg
Let v is the velocity of the system.
By the conservation of linear momentum : Initial momentum = Final momentum
1000×50=1250×v
v=50,0001250=40kmh.
Was this answer helpful ?
More Questions on This Topic :
Latest Videos
Latest Test Papers
Submit Solution