A 4.2-g bullet leaves the muzzle of a rifle with a speed of 340 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.77-m-long barrel of the rifle?
A 4.2-g bullet leaves the muzzle of a rifle with a speed of 340 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.77-m-long barrel of the rifle?
Given:
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m 4.2 gm m 4.2x10 kg v =340 m/s u 0 m/s s 0.77 m
According to Newton equation of motion
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у? — и* + 2as у? —и? 2s (340)-(0) а: 2x0.77 а-75064.9350 m/s?
Force on bu...
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F =ma F 4.2x10 x75064.9350 F 315.27 N
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