Asked by Trevor
An object is launched straight up into the air with an initial velocity of 40 m/s, from a height 30 m above the ground. Assuming that gravity pulls it down, changing its position by about 4.9 m/s2, after how many seconds will the object hit the ground?
Answers
Answered by
oobleck
just solve 30 + 40t - 4.9t^2 = 0
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