vickydani890 vickydani890

20-02-2024
Chemistry

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The rolllercoaster below is on its way up to point A which has a vertical distance of 40m .the motor will pull it up in. 50 seconds .the mass of the rollercoaster is 500kg and the power rating on the motor is 9000 W.gravitational field strength is 10N/kg . What is the efficiency

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