Question

A rubber bullet of mass m = 0.025   k g m=0.025kg traveling at velocity v 0...

A rubber bullet of mass m = 0.025   k g m=0.025kg traveling at velocity v 0 = 50   m / s v 0 ​ =50m/s hits an iron block of mass M = 15   k g M=15kg initially hanging at rest from a massless rope. After the collision, the bullet bounced straight back at a velocity of v 1 = 35   m / s v 1 ​ =35m/s.

The effect of gravity on the bullet alone can be ignored. To what maximum height hh will the iron block reach after the collision? (Assume that the rope remains tight during the entire process).

Pick the correct answer

0.0318 mm0.0318mm

14.5 mm14.5mm

2.05 mm2.05mm

1.02 mm1.02mm

108.4 mm108.4mm

None of these are correct

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