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A block that has a mass M = 500g is hanging at rest on a light...

A block that has a mass M = 500g is hanging at rest on a light string. A projectile with a mass m = 15g moving horizontally with a velocity of 255m/s strikes M and sticks in it. The block and its projectile swing up. How high does the center of mass rise?

A. 1.4 m

B 3.2 m

C .33 m

D .83 m

E 2.8 m

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