Question

in travelling 65cm along the barrel of a rifle a bullet accelerates from rest to 230 m/s. Find the acceleration and the time the bullet is in the barrel.​

Answer 1

160 km

Hope this helps....

Answer 2

`2ax=v_(2)^(2)-v_(1)^(2)\\2a((65)/(100))=230^(2)-0^(2)\\a=40692(4)/(13)m/s^(2)\\\\x=(1)/(2) at^(2)\\(65)/(100)=(1)/(2)(40692(4)/(13))t^(2)\\t=0.0101896s`

I've written all the needed equations for you. All you have to do is some replacements.

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