uestion 3-   The hot air balloon A hot air balloon is stationary about 3 m above the ground when a gust of wind suddenly arrives with a speed of 40 km/h. Determine the horizontal initial acceleration. The balloon is designed as a sphere with a diameter of 10 m. It is filled with 80°C air. Ambient air has a temperature of 10°C. The actual fabric balloon and basket with cargo has a mass of 200 kg.

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