tosses a coin vertically upwards with a speed of 20 ms^−1 . After how much time will the coin fall back into his hand? (Take g=10ms^−2)

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A person in an elevator accelerating upwards with an acceleration of 2 ms^−2 , tosses a coin vertically upwards with a speed of 20 ms^−1 . After how much time will the coin fall back into his hand? (Take g=10ms^−2)
27
Nov
A person in an elevator accelerating upwards with an acceleration of 2 ms^−2 , tosses a coin vertically upwards with a speed of 20 ms^−1 . After how much time will the coin fall back into his hand? (Take g=10ms^−2) A person in an elevator accelerating upwards with an acceleration of 2 ms^−2 tosses a [...]
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