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A 1000-kg aircraft going 25 m/s collides with a 1500-kg aircraft that is parked. They stick together after the collision and are moving at 10 m/s. If they skid for 9.7 seconds before stopping, how far (in meters) did they skid?
Hint: Are the aircraft moving at a constant velocity after the collision or do they experience an acceleration?
An archer aims an arrow precisely horizontal over a flat field and shoots it. At the same instant, the archer's watchband breaks and the watch falls to the ground. Does the watch hit the ground before, at the same time as, or after the arrow hits the..
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A system has a heat source supplying heat at a rate of 149 W and is doing work at a rate of 104.3 W. At what rate is the internal energy of the system changing
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