A Stationary 4-Kg Shell Explodes into Three Pieces

question 18

Multiple Choice

A stationary 4-kg shell explodes into three pieces. Two of the fragments have a mass of 1 kg each and move along the paths shown with a speed of 10 m/s. The third fragment moves upward as shown.
-What is the speed of the center of mass of this system after the explosion?

• A)zero m/s
• B)1 m/s
• C)3 m/s
• D)5 m/s
• E)7 m/s

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