A golfer plays a putt stroke on a level \'green\' (tine grass surface), hitting

Question

A golfer plays a putt stroke on a level 'green' (tine grass surface), hitting ball A toward the hole. She strikes the ball perfectly, giving it just the right initial speed upsilon so that after slowing on the grass. the ball just reaches the hole and tails into it. Her partner's ball B lies exactly twice as far from the hole. In order for ball B to just reach the hole, at what speed must it be travelling immediately after being Struck? Assume B constant retarding force on the grass. 4upsilon upsilon 2upsilon

Explanation / Answer

A

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