A hot air balloon is rising straight upward with a constant...

A hot-air balloon is rising straight upward with a constant speed of 6.50 m/s. When the basket of the balloon is 20.0 m above the ground, a bag of sand tied to the basket comes loose. Find the speed of the bag just before it lands when it is released from 20.0 m. What is the amount of time the bag is in the air?

Example 2-21 depicts the following scenario with the accompanying figures. A hot-air balloon is rising straight upward with a constant speed of 6.5 m/s. When the basket of the balloon is 20.0 m above the ground, a bag of sand tied to the basket comes loose and reaches a maximum height of 22 m. (a) If the bag in Example 2-21 had been released at 31.0 m instead, with everything else remaining the same, would its maximum height be 33 m, greater than 33 m, or less than 33 m? Answer: 33 m (b) Find the speed of the bag in part A just before it lands when it is released from 31.0 m. (c) Now, suppose the balloon in Example 2-21 is descending with a constant speed of 4.2 m/s when the bag of sand comes loose at a height of 35 m. What is the amount of time the bag is in the air? (d) What is the speed of the bag when it is 17 m above the ground?

Jagjit Singh C.

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