1.

A ball is thrown vertically up (taken as + z-axis) from the ground. The correct momentum-height (p-h) diagram is:

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Solution :`V^2 = u^2 - 2gh "" implies ""m^2v^2 = m^2u^2 - 2mgh implies p^2 = A - Bh ` (Where `A = m^2u^2 , b = 2mg)`
Clearly it is parabolic functions.
STARTING from ground momentum first decreases and then becomes zero at highest position. THEREFORE it increases in –ve direction. HENCE `3^(rd)` option is correct.


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