Kinematics Question 216

Question: A body freely falling from the rest has a velocity v after it falls through a height h. The distance it has to fall down for it’s velocity to become double, it’s [BHU 1999]

Options:

A) 2h

B) 4h

C) 6h

D) 8h

Show Answer

Answer:

Correct Answer: B

Solution:

Let at point A initial velocity of body is equal to zero for path AB : v2=0+2gh -(i) for path AC : (2v)2=0+2gx

4v2=2gx -(ii) Solving (i) and (ii) x=4h



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