Answer to Question #103287 in Mechanics | Relativity for Sam

Question #103287
A bullet of mass 55g is shot through a watermelon with mass 1.2kg. the watermelon flies back at 1.5m/s with the bullet inside. what was the bullet’s speed upon entering the watermelon?
1
Expert's answer
2020-02-20T09:24:15-0500

From the conservation of momentum:


mv=(m+M)umv=(m+M)u

(0.055)v=(0.055+1.2)1.5(0.055)v=(0.055+1.2)1.5

v=34msv=34\frac{m}{s}


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