Final answer:
To calculate the descent time for a hot air balloon from 130 meters to 65 meters at a rate of 6.5 meters per minute, subtract the final altitude from the initial altitude and divide by the rate. It will take 10 minutes to reach 65 meters.
Step-by-step explanation:
The problem involves calculating the time it will take for a hot air balloon to descend from an altitude of 130 meters to 65 meters at a rate of 6.5 meters per minute.
To find out how long it will take for the hot air balloon to reach an altitude of 65 meters, we need to subtract the target altitude from the starting altitude and then divide the result by the descent rate.
The starting altitude is 130 meters, and the target altitude is 65 meters. The descent rate is 6.5 meters per minute. So, the total altitude the balloon needs to descend is 130 meters - 65 meters = 65 meters. We then divide this quantity by the rate of descent to find the time: 65 meters ÷ 6.5 meters per minute = 10 minutes.
Therefore, it would take the hot air balloon 10 minutes to descend to an altitude of 65 meters above the ground.