Asked by Deepa
A rock is tossed straight up with a velocity of 37.1 m/s. When it returns, it falls into a hole 18.8 m deep.
How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
Answers
Answered by
bobpursley
hfinal=hinitial+vi*time -1/2 9.8 time^2
hfinal is -18.8 hinital is zero.
solve for time, notice it is a quadratic.
hfinal is -18.8 hinital is zero.
solve for time, notice it is a quadratic.
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