A balloonist drops his camera from a height of 100 m while his balloon is ascending at 5 m/s. How long did it take to reach the ground?

Answer 1

in meters

0=-4.9t²5t+100

(4.9=9.8/2,,,,-9.8 is constant acceleration of gravity)

t=(-5/(2*-4.9))(+/-)(√(5²-4*-9.8*(100))/(2*9.8) because roots equal (-b/2a)(+/-)(√/(b²-4ac))/2a

must use plus option for positve t (time is positive going forward)

t= .51+4.55=5.06

which kind of makes sense, about 5 seconds