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Question

The water drops fall at regular intervals from a tap 5 m above the ground. The third drop is leaving the tap at instant the first drop touches the ground. How far above the ground is the second drop at that instant? (Take g=10 ms2)

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Solution

Time taken by 1st drop =2t
h=12g(2t)2
t=h2g
t=12 s
h=12gt2=1.25 m
height=hh=51.25=3.75 m
971894_1067337_ans_2648ade038e44ef8b17221453f06a815.png

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