(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An object with mass [itex]6.9*10^-3 kg[/itex] and velocity 1300 m/s comes to a stop in 1cm. What force was applied to stop it?

2. Relevant equations

F = ma

[itex]v^2=v_o ^2+2a\Delta x[/itex]

3. The attempt at a solution

[itex]v^2=v_o ^2+2a\Delta x[/itex]

[itex]0=(1300)^2+2a(0.001)[/itex]

[itex]a=-\frac{(1300)^2}{2(0.001)}=-8.45*10^8 \frac{m}{s^2}[/itex]

[itex]F=ma[/itex]

[itex]F=(6.9*10^{-3} kg)(-8.45*10^8 \frac{m}{s^2})= -5.83*10^6 N[/itex]

Apparently that is not the correct answer. What did I do wrong?

Many thanks!

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# Homework Help: Finding the force required to stop an object

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