[SOLVED] Projectile motion help A snowball rolls of a barn roof that slopes downward at an angle of 40 degrees. The edge of the roof is 14 m above the ground, and the snowball has a speed of 7 m/s as it rolls off the roof. a) How far from the edge of the barn does the snowball strike the ground if it doesn't strike anything else while falling? b) A man 1.9 m tall is standing 4 m from the edge of the barn, will he be hit by the snowball? My answer is 11.792 m for (a) x a=0 v=7cos40=5.36 x=5.36t y a=-9.8 v=7sin40-9.8t= 4.5-9.8t y=4.5t-4.9t^2+14 (is this right?) When y=0 : 0=-4.9t^2 + 4.5t + 14 (use quadratic equation) t=2.2 Plug it into x equation: x=5.36(2.2) x=11.792 m Now for (b) i don't know what to do. I said x=4 and got t=.746 s Then I plugged it into the y equation but my answer turned out to be 14.36 which is impossible. Any help is greatly appreciated.