A hot-air ballon is rising upward with a constant speed of2.50m/s. When the ball

Question

A hot-air ballon is rising upward with a constant speed of2.50m/s. When the ballon is 3.00 m above the ground, theballoonist accidentally drops a compass over the side of theballon. How much time elapses before the compass hit theground? Amswer:_____sec A hot-air ballon is rising upward with a constant speed of2.50m/s. When the ballon is 3.00 m above the ground, theballoonist accidentally drops a compass over the side of theballon. How much time elapses before the compass hit theground? Amswer:_____sec

Explanation / Answer

x=vot-4.9t2, so -3=2.5t-4.9t2 then wesimply solve the quadratic and take the positive root answer, sot=1.078 s

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