A rocket travels vertically at a speed of 1200 km/hr.

The rocket is tracked through a telescope by an observer located 11 km from the launching pad.

Find the rate at which the angle between the telescope and the ground is increasing 3 min after lift-off.

(Round your answer to two decimal places.)

Question

A rocket travels vertically at a speed of 1200 km/hr.

The rocket is tracked through a telescope by an observer located 11 km from the launching pad.

Find the rate at which the angle between the telescope and the ground is increasing 3 min after lift-off.

(Round your answer to two decimal places.)

ash2326 · Answer

|dw:1426999817225:dw|

@jv2015 I have drawn a figure illustrating the problem.
X is the horizontal distance, stated in problem as 11 km
y is the vertical distance

Do you follow?