Agolf club is swung and strikes a golf ball with a force of 12.2 n. the golf ball accelerates at 265.2 m/s2 (wow) determine the mass of the golf ball.

F = m A  (Newton #2)

m = F/A

m = (12.2 N) / (265.2 m/s²)

m = (12.2 / 265.2) kg

m = 0.046 kg  

(46 grams;  not bad; the international standard is "not more than 45.93 grams")

Note:  265.2 m/s² = about 27 G's .  Seems to me like that would rip the ball to shreds, but I don't really know anything about golf.)