A 17 g bullet is fired from a rifle. It takes 2.75*10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 616 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet.
2007-02-26 04:46:04 · 2 answers · asked by softball579 1 in Science & Mathematics ➔ Physics
v = u+at, (v-u)/t=a (616-0)/2.75e-3 = a = 224,000 m/s/s
f=ma=0.017*224000=3,808N
2007-02-26 04:57:46 · answer #1 · answered by Chris H 6 · 0⤊ 0⤋
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2007-02-26 12:53:37 · answer #2 · answered by god knows and sees else Yahoo 6 · 0⤊ 1⤋