A bullet of mass 10g strikes a fixed target and penetrates 8 cm into it before coming to rest. If the average force of resistance offered by the target is 100 N with what velocity does it strike ? :

A bullet of mass 10g strikes a fixed target and penetrates 8 cm into i

1.	A bullet of mass 10g strikes a fixed target and penetrates 8 cm into it before coming to rest. If the average force of resistance offered by the target is 100 N with what velocity does it strike ? :
Answer» `10 ms^(-1)` `20 ms^(-1)` `30 ms^(-1)` `40 ms^(-1)` Solution :WORK done = change in K.E. `Fxxx=1/2mv^(2)` `:. v=sqrt((2Fx)/(m))=sqrt((2xx100xx(8)/(100))/((10)/(100)))=40 ms^(-1)`

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A bullet of mass 10g strikes a fixed target and penetrates 8 cm into it before coming to rest. If the average force of resistance offered by the target is 100 N with what velocity does it strike ? :

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