The recoil of a shotgun can be significant. Suppose a 3.6-kg shotgun is held tightly by an arm and shoulder with a combined mass of 15.0 kg. For the steps and strategies involved in solving a similar problem, you may view the following Quick Example 9-8 video: REASONING AND SOLUTION The momentum of the lumberjack/log system must be conserved: Pu + Pick - 0 rearrange My = 61 kg substine puj - mum, & - 1.8 m/s Xing - 320 kg V Part A When the gun fires a projectile with a mass of 0.037 kg and a speed of 390 m/s, what is the recoil velocity of the shotgun and arm-shoulder combination? Express your answer to three significant figures and include appropriate units. HA ? Value Units Submit Request