A 10-lb bowling ball traveling at 16 mph strikes a 1.6 kg bowling pin at rest. If the bowling ball slows down to a speed of 2 mph after colliding with the pin, what is the speed of the pin after the perfectly elastic collision? (Recall: 1 mi = 1,609 m; 1 hr = 3,600 s; 1 lb = 4.45 N [approximately]). Make sure you show all of your work and use proper SI units