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QAIPM-2012-Ph-1657: NEET 2012 Physics - Class 11 AIPM-2012-Ph-1657 Solution: A stone is dropped from a height h. It hits the ground with a…
A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stone is dropped from a height 100% more than the previous height the momentum when it hits the ground will change by 68% 41% 200% 100%
Multiple Choice Options
- A 68%
- B 41%
- C 200%
- D 100%
Step-by-Step Verified Solution
When a stone is dropped from a height h,
it hits the ground with a momentum
P = m 2 g h ....(1)
where m is the mass of the stone.
When the same stone is dropped from a height 2h
(i.e. 100% of initial), then its momentum with which
it hits the ground becomes
P _ = m 2 g ( 2 h ) = 2 P [Using (1)] ...(2)
% change in momentum = P _ _ P P _ 100 %
= 2 P _ P P _ 100 % = 41 %