Solution 15.3
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(New page: First find the impulse (change in momentum). <math>\begin{align} & \text{Impulse }=mv-mu \\ & 1200\times 15-1200\times 20 \\ & =-6000\text{ Ns} \end{align}</math> Use the formula ...)
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Revision as of 17:02, 14 September 2010
First find the impulse (change in momentum).
\displaystyle \begin{align} & \text{Impulse }=mv-mu \\ & 1200\times 15-1200\times 20 \\ & =-6000\text{ Ns} \end{align}
Use the formula
\displaystyle \text{Impulse }=Ft
\displaystyle \begin{align} & -6000=F\times 20 \\ & F=-300\text{ N} \\ \end{align}
