Question

A girl flies a kite at a constant height of 300ft, the wind carrying the kite horizontally away from her at a rate of 25 ft/sec. How fast must she let out the string when she has let out 500 feet of string

Answer 1

Answer:

she must let out the string when the kite is 700 ft away from her at 20 ft/s

Explanation:

given information:

a = the distance between the girl

b = the length of the string

a = 300

da/dt = 20 ft/s

c =500 ft, dc/dt = ?