Political Science, asked by l0ve01, 4 months ago

Solve plzz...

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Answered by Anonymous
81

GIVEN :-

Mass = 250 g

Speed = 2 m/s

Time of contact = 10⁻³ sec

The average force exerted by the wall on the ball = ?

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begin{gathered}\begin{gathered}\begin{gathered}:\implies \sf{ \Delta p = mv + mv}\\\\\end{gathered} \end{gathered}\end{gathered}

\begin{gathered}\begin{gathered}:\implies \sf{ \Delta p = 2(mv)}\\\\\end{gathered} \end{gathered}

Now we shall find the average force!!

\begin{gathered}\begin{gathered}\begin{gathered}:\implies \sf{F = \dfrac{dp}{dt} }\\\\\end{gathered} \end{gathered}\end{gathered}

\begin{gathered}\begin{gathered}\begin{gathered}:\implies \sf{F = \dfrac{\Delta p}{\Delta t} }\\\\\end{gathered}

\begin{gathered}\begin{gathered}:\implies \sf{F = \dfrac{2mv}{\Delta t} }\\\\\end{gathered} \end{gathered}

\begin{gathered}\begin{gathered}\begin{gathered}:\implies \sf{F = \dfrac{2 \times 0.25 \times 2}{ {10}^{ - 3}} }\\\\\end{gathered} \end{gathered}\end{gathered}

\begin{gathered}\begin{gathered}:\implies \sf F = \dfrac{2 \times 250 \times 10^{-3} \times 2}{ {10}^{ - 3}} \\\\\end{gathered}\end{gathered}

\begin{gathered}\begin{gathered}\begin{gathered}:\implies \sf F = \dfrac{1000\times \cancel{10^{-3}}}{\cancel{{10}^{ - 3}}} \\\\\end{gathered} \end{gathered}\end{gathered}

:\implies \underline{\boxed{\mathfrak{\pink{ f = 1000 \: n}}}}

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