A hot-air balloon is rising upward with a constant speed of 3.67 m/s. When the balloon is 2.53 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?
using 2nd equation of motion
h = ho + ut - 0.5 gt^2
0 = 2.53 + 3.67* t - 0.5* 9.8* t^2
0 = - 4.9 t^2 + 3.67 t + 2.53
solving for t
t = 1.185 seconds
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