physics

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?

asked by Deepa
  1. 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.

    posted by bobpursley

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