A bullet of mass 10 g moving horizontally with a velocity of 400 m/s strikes a wooden block of mass
Channel: Ritesh Dahiya (RD Sir) (KDC) Kota Doubt Counter
Date: 25/08/2020

A bullet of mass 10 g moving horizontally with a velocity of 400 m/s strikes a wooden block of mass 2 kg which is suspended by light in extensible string of length 5 m. As a result, the center of gravity of the block is found to rise a vertical distance of 10 cm. The speed of the bullet after it emerges out horizontally from the block will be:
(a)  100 m/s      (b)  80 m/s          (c)  120 m/s          (d)160 m/s

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