a Bullet leaves the barrel of a rifle with a speed of 300 M per second. if the length of the barrel is 0.9 m at what rate is the bullet acclerated while in the barrel?
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apply v^2= 2as.
v= 300 m/sec.
s= 0.9 m
so a = v^2/ 2s
v= 300 m/sec.
s= 0.9 m
so a = v^2/ 2s
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