Comments on: A golf ball rolls up a hill toward a minature-golf hole. Assume that the direction toward the hole is positive? http://www.mulliganpractitioner.com/golf-hole/a-golf-ball-rolls-up-a-hill-toward-a-minature-golf-hole-assume-that-the-direction-toward-the-hole-is-positive Better Golf Is What We're All About Sat, 17 Jul 2010 23:22:59 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: Ivan A http://www.mulliganpractitioner.com/golf-hole/a-golf-ball-rolls-up-a-hill-toward-a-minature-golf-hole-assume-that-the-direction-toward-the-hole-is-positive/comment-page-1#comment-1209 Ivan A Wed, 10 Mar 2010 20:41:59 +0000 http://www.mulliganpractitioner.com/golf-hole/a-golf-ball-rolls-up-a-hill-toward-a-minature-golf-hole-assume-that-the-direction-toward-the-hole-is-positive#comment-1209 a) If the acceleration of the center of mass is -0.5 m/s/s then after 2s the ball decelerated 1m/s and thus the velocity of the center of mass is 1 m/s b) After 6 seconds, the change in velocity is 3 m/s and thus the speed is -1 m/s which means that the ball now is moving backwards from its original motion.<br><b>References : </b><br> a) If the acceleration of the center of mass is -0.5 m/s/s then after 2s the ball decelerated 1m/s and thus the velocity of the center of mass is 1 m/s

b) After 6 seconds, the change in velocity is 3 m/s and thus the speed is -1 m/s which means that the ball now is moving backwards from its original motion.
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