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4. A 12000 kg railroad car is coasting along a level, frictionless track at a constant speed of 25 m/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?

4. A 12000 kg railroad car is coasting along a level, frictionless track at a constant speed of 25 m/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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4. A 12000 kg railroad car is coasting along a level, frictionless track at a constant speed of 25 m/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?
Transcribed Image Text:4. A 12000 kg railroad car is coasting along a level, frictionless track at a constant speed of 25 m/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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