Question

Jestion 4: Bullets are fired using pressurized L gas in an enclosure. The pressurized gas (produced by a combustion reaction) accelerates the bullet along the barrel. As the enclosed gas expands the pressure drops and the acceleration Compressed Gas decreases along the barrel according to the formula a= 850 x14 m/s? The barrel's length is 0.719 m. If the bullet starts from rest 0.01 m from the closed, left end of the barrel, what is its speed as it escapes the barrel exit on the right?

Answer 1

0-4) acceleration -04 a = 8570 x 22 m/s2 vov -1.4 850 x Tx -104 → da. Svov = 1850 ** [12 850 -lo 4+1 x 2 -1.4 +1 (222 TA x=0.719 = -850 0.4 V=0 ( -0.4 x ***J*50479 X = 0.01m, = yes close to je v (0.7ig4 -0.4 Oool v=148. 2 1 m/s. Anda Bpeed of bullet ab it escapes barrel exit on the right. Note- At 2=0.0lm, VEO 24 = 0.719 m, V=V