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4-1.Newton's Laws of Motion
hard
બૉલને જમીન પરથી શિરોલંબ દિશામાં ( $+z-$ અક્ષ) ફેકવામાં આવે છે, તો નીચેનામાથી વેગમાન વિરુદ્ધ ઊંચાઈનો આલેખ કયો સાચો પડે?
A
B
C
D
(JEE MAIN-2019)
Solution
$\begin{array}{l}
Momentum\,p = mv\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,…\left( 1 \right)\\
and\,for\,motion\,under\,gravity\,\\
h = \frac{{{u^2} – {v^2}}}{{2g}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,…\left( 2 \right)\\
h = \frac{{{u^2} – {p^2}/m}}{{2g}}
\end{array}$
Standard 11
Physics
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