18. [1/2 Points] DETAILS PREVIOUSANSWERS SERCP11 6.2.P.022. A rifle with a weight of 20 N fires a 5.1-g bullet with a speed of 220 m/s. (a) Find the recoil speed of the rifle. .55 m/s (b) If a 675-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. 0163 X Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculati