Question

A machine gun fires 20 bullets per second into a target. Each bullet weighs 150 gms and has a speed of 800 m/sec. Find the force necessary to hold the gun in position

• A. 800 N
• B. 1000 N
• C. 1200 N
• D. 2400 N

Answer 1

Answer: (D)

2400 N

Answer 2

$F = mnv = 150 \times 10^{- 3} \times 20 \times 800 = 2400\mspace{6mu} N.$