physics 11 question?

Question

Please help me: a 1500 kg train container is traveling horizontally at 5.0m/s. It passes a wheat chute which vertically drops a load of grain into the container in 5s the container full of grain slows to 1.2 m/s how much grain was deposited and what is the horizontal impulse of the container and grain together?

Answer 1

Conservation of momentum states that the center of mass times the velocity component is constant.

1500*5=(1500+grain)*1.2
(1500*5/1.2)-1500=grain
grain = 4750 kg

(this assumes the car was coasting with no horizontal force applied)

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