Posted by Nancy on Thursday, March 28, 2013 at 1:49pm.
Jimmy jumped into a lake from a 12foothigh 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  Steve, Thursday, March 28, 2013 at 1:51pm
just solve for when the height is zero:
16t^2 + 7t + 12 = 0