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Question: A student throws a set of keys vertically upward to her sister in a window 4.0 m above. The keys are caught 1.5 s later by the sister’s outstretched h&. Find initial speed were the keys thrown?

[A] 15.0 m/s
[B] 13.7 m/s
[C] 10.0 m/s
[D] 17.1 m/s

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Category:- Physics
Reference No.:- M9162890

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