A balloon leaves the earth at a point A and rises vertically at uniform speed. At the end of 2 minutes, John finds the angular elevation of the balloon as 60 . If the point at which John is standing is 150 m away from point A, what is the speed of the balloon?

A balloon leaves the earth at a point A and rises vertically at unifor

1.	A balloon leaves the earth at a point A and rises vertically at uniform speed. At the end of 2 minutes, John finds the angular elevation of the balloon as 60 . If the point at which John is standing is 150 m away from point A, what is the speed of the balloon?
A.	2.16 meter/sec
B.	0.72 meter/sec
C.	0.63 meter/sec
D.	3.87 meter/sec
Answer» B. 0.72 meter/sec

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A balloon leaves the earth at a point A and rises vertically at uniform speed. At the end of 2 minutes, John finds the angular elevation of the balloon as 60 . If the point at which John is standing is 150 m away from point A, what is the speed of the balloon?

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