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If a player hits a driver and de-accelerates the club from 110 mph to 100 mph at impact. Another player hits a driver and accelerates the club from 90 mph to 100 mph at impact. All other things being equal will both balls travel the same distance?
Are you allowed to get help with your physics homework?
Anyway, my answer would be that ball speed, resulting in distance, results from the impact velocity, not acceleration, so the distance would be more or less the same. But I think the question describes an impossible situation. What mysterious force in the universe causes an instantaneous acceleration on impact in the second scenario? The deceleration at impact is plausible.