Answer:
If air resistance is taken as negligible, then the ball is in freefall the moment it is thrown so gravity is the only force acting on the object. If air resistance is not negligible then gravity will be the greatest force acting on the ball while it is going up and coming down, because Fair has to be less than gravity at all times otherwise the atmosphere would wither away.
For finding a momentum p=mv so p=9×2 , P=18
Ocean currents are caused by density differences in the water and move water masses through the deep ocean
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