A stone ks dropped from a high bridge into the water. A camera takes a photograph every 0.4 seconds showing how far the stone has falle. The equation is given y= 4.9x^2 IF the bridge is 11 meters above the water, how long will it take for the stone to hit the water. I came up with 4.5176 sec. Also after 3 seconds it asks how far has it fallen, I came up with 44.1 meters. The other part asked how far the stone fell in the last hundredth of a second before hittiong the water. I came up with .45 sec. It also asks how fast was the stone traveling before it hit the water? And how fast was the stone traveling when it hit the water. I don't know how to do that part.
Any help would be appreciated!
Thank you very much!!!!!!!