Physics, 14.08.2020 14:01 laurenppylant

a 1.2 x 10^4 kg railroad car is coasting along a level, frictionless track at a constant speed of 25m/s, when a 3000 kg load is dropped vertically onto the car from above. What will its new speed be assuming the load stays on the car??

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a 1.2 x 10^4 kg railroad car is coasting along a level, frictionless track at a constant speed of 25...