What is the resulting speed of the combined cars

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Q. Florence, who weighs 120 lbs, stands on a bathroom scale in an elevator. What would the scale read when the elevator is accelerating downward at 2m/s2?

Q. A 20,000 kg railroad car is traveling at 3 m/s while it collides and couples with a second, identical car at rest. What is the resulting speed of the combined cars?

Reference no: EM1344814

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