A Balloon Is Released from a Tall Building

question 54

Multiple Choice

A balloon is released from a tall building.The total mass of the balloon including the enclosed gas is 2.0 kg.Its volume is 5.0 m³.The density of air is 1.3 kg/m³.
-Will the balloon rise,fall,or remain stationary;and why?

• A)The balloon will fall because its density is greater than that of air.
• B)The balloon will remain stationary because its density is less than that of air.
• C)The balloon will rise because the upward buoyant force is greater than its weight.
• D)The balloon will fall because the upward buoyant force is less than its weight.
• E)The balloon will fall because the downward buoyant force is greater than the upward buoyant force.

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