Answer to Question #105236 in Mechanics | Relativity for Anika Roejkjaer

Question #105236
A bullet of mass 0.02kg travelling with speed 100m/s comes to rest when it has gone 0.4m into sand. Find the resisting force exerted by the sand
1
Expert's answer
2020-03-12T02:50:09-0400

"A=Wk1-Wk2=Wk1; \nA=F \\times S=Wk1=\\frac{m\\times v^{2}}{2};\nF=\\frac{m\\times v^{2}}{2\\times S}=250 N"


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Comments

Oz Cohen
12.03.20, 12:29

i see we had a similar idea

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