Question: A plastic beach ball has radius 20.0 cm and mass 0.10 kg, not including the air inside. (a) What is the weight of the beach

A plastic beach ball has radius 20.0 cm and mass 0.10 kg, not including the air inside.
(a) What is the weight of the beach ball including the air inside? Assume the air density is 1.3 kg/m 3 both inside and outside.
(b) What is the buoyant force on the beach ball in air? The thickness of the plastic is about 2 mm-negligible compared to the radius of the ball.
(c) The ball is thrown straight up in the air. At the top of its trajectory, what is its acceleration? [When v = 0, there is no drag force.]

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