A balloon leaves from a point P rises at a uniform speed. After 6 minutes, an observer situated at a distance of 450√3 metres from point P observes that angle of elevation of the balloon is 60°. Assume that the point of observation and point P are on the same level. What is the speed (in m/s) of the balloon?

A balloon leaves from a point P rises at a uniform speed. After 6 minu

1.	A balloon leaves from a point P rises at a uniform speed. After 6 minutes, an observer situated at a distance of 450√3 metres from point P observes that angle of elevation of the balloon is 60°. Assume that the point of observation and point P are on the same level. What is the speed (in m/s) of the balloon?
A.	4.25
B.	3.75
C.	4.5
D.	3.45
Answer» C. 4.5