A balloon is increasing at a continuous speed the 5 ft/s. A boy is cycling along a straight roadway at a rate of 15 ft/s. Once he overcome under the balloon, that is 45 ft above him. How rapid is the distance in between the boy and also the balloon boosting 3 s later?

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balloon is rising at a constant speed of 5ft/s. A boy is cycling along a straight road at a speed of 15ft/s. When he passes under the balloon, it is 45 ft above him. How fast is the distance between the boy and the balloon increasing 3 s... See Answer
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