Question

a bullet leaves a rifle with a muzzle velocity of 1042m/s .while accelerating through the barallel of the rifle , the bullet moves a distance of 1.680m . detemine the acelleration of of the bullet.(asumes a uniform acceleration)

Answer 1

hi,

The question states that 0.840 m is the distance travelled within the barrel. Therefore u = 0 m/s, v= 521 m/s. 

This means that a = (v^2 - u^2)/2s. 

This is a reformat of v^2 = u^2 + 2as 

a = (521^2)/(2 x 0.840) 

a = 161.57 m/s^2

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