1. The problem statement, all variables and given/known data A person is standing 80 ft from a tall cliff. She throws a rock at 80 ft/sec at an angle of 45 degrees from the horizontal. Neglecting air resistance and discounting the height of the person, how far up the cliff does it hit? 2. Relevant equations r = ((xo + vo*cos(~))t) i + (yo + (vo*sin(~)t - ((1/2)gt^2))j r = the distance ; xo = initial distance from horizontal direction ; yo = initial distance from vertical direction ; vo = initial velocity; t = time; g = gravity (9.8m/s); ~ = degrees 3. The attempt at a solution The correct answer is 48 feet. I did not get that answer from plugging in all the values in the equation.