a bullet traveling with a velocity of 16m/s penetrates a tree trunk &comes to test in 0.4m .find the time taken during the retardation???
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v^2–u^2=2as
v=16,u=0,s=0.4
a=16×16/2×0.4
a=320m/s ^2
v-u =at
t=16/320=0.05sec
v=16,u=0,s=0.4
a=16×16/2×0.4
a=320m/s ^2
v-u =at
t=16/320=0.05sec
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