imlowkeythebest5526 imlowkeythebest5526
  • 26-03-2024
  • Mathematics
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A bullet of mass m moving with speed u penetrates through a series of planks and finally stops in the 6 th plank. Then the speed of bullet after emerging from 3rd plank can be
a. u/2
b. 0.6 u
c, u/√2
d. 0.4 u

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