Define the total mass of the car plus sand

Reference no: EM13229128

A railroad hopper car filled with sand is rolling with an initial speed of 13.5 on straight, horizontal tracks. You can ignore frictional forces on the railroad car. The total mass of the car plus sand is 85,000 . The hopper door is not fully closed so sand leaks out the bottom. After 18.0 minutes, 1.34×104 of sand has leaked out. Then what is the speed of the railroad car?

Reference no: EM13229128

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