A bullet moving with 10ms hits the wooden plank. the bullet is stopped when it penetrates 2 cm deep hole calculate retardation
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a=V/t for retardation -a=V/t
v=s/t i.e. 10=2/t i.e t=1/5
:. -a=v/t = 10/5 i.e -2m/s square
v=s/t i.e. 10=2/t i.e t=1/5
:. -a=v/t = 10/5 i.e -2m/s square
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