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28 May, 11:39

You drop your keys in a high-speed elevator going up at a constant speed. Part APart complete Do the keys accelerate faster toward the elevator floor than they would if the elevator were not moving? Do the keys accelerate faster toward the elevator floor than they would if the elevator were not moving? Yes No Previous Answers Correct Part B Do the keys accelerate faster toward the elevator floor than they would if the elevator were accelerating downward? Do the keys accelerate faster toward the elevator floor than they would if the elevator were accelerating downward? No Yes

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  1. 28 May, 15:15
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    Explanation:

    a) No, the keys were initially moving upward in the elevator only effects the initial velocity of the key and not the rate of change of velocity that is acceleration. So, the keys accelerate with the same acceleration as before.

    b) Yes, keys will accelerate towards the floor faster if it is a constant speed than it is moving downward because if the elevator is accelerating downward, the downward change in velocity of the keys is at least partially matched by a downward change in the velocity of the of the elevator.
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