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Q. A 114 watt motor is used to lift a 142 kg container to a height of 5 m. How much time does it take to lift the container with the motor?

Q. Suppose the roller coaster in (h1 = 30 m, h2 = 14 m, h3 = 30) passes point A with a speed of 2.50 m/s. If the average force of friction is equal to one fifth of its weight, with what speed will it reach point B? The distance traveled is 40.0 m.

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Category:- Physics
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