qmaster Posts: 12, Reputation: 1 New Member #1 Aug 3, 2012, 05:38 AM
A body falls freely from the top of a tower and it falls 7/16th of the total distance
A body falls freely from the top of a tower and it falls 7/16th of the total distance in its last second. The time taken by the body for complete motion is….. ans:4 sec pz solve it.
 sujoy060188 Posts: 1, Reputation: 1 New Member #2 Jan 25, 2013, 11:54 PM
s=gt^2
st=(1/2)g(2t-1)

(7/16)s=(1/2)g(2t-1)
(7/16)gt^2=(1/2)g(2t-1)

7t^2-32t+16=0
(t-4)(7t-4)=0

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