A Balloon Is Released from a Tall Building

question 55

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.
-What is the magnitude of the initial acceleration of the balloon?

• A)zero m/s²
• B)9.8 m/s²
• C)10.9 m/s²
• D)22.1 m/s²
• E)43.6 m/s²

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