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Posted by on Thursday, March 28, 2013 at 1:49pm.

Jimmy jumped into a lake from a 12-foot-high cliff with an initial upward velocity of 7 feet per second. Find the time in seconds it took Jimmy to enter the water. Use the model for vertical motion given by the equation h = -16 t squared + vt + s

  • Math - , Thursday, March 28, 2013 at 1:51pm

    just solve for when the height is zero:

    -16t^2 + 7t + 12 = 0

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