1. The problem statement, all variables and given/known data A ball is thrown horizontally from the top of a building 54.5 m high. The ball strikes the ground at a point 61 m from the base of the building. The acceleration of gravity is 9.8 m/s^2 (9.8 meters per second squared) 1. Find the time the ball is in motion. (in units of s) 2. Find the initial velocity of the ball (in units of m/s) 3. Find the x component of its velocity just before it strikes the ground. (in units of m/s) 4. Find the y component of its velocity just before it strikes the ground. HELP! please!!! 2. Relevant equations Delta X = VX T R = (Vsquared sin (2 x angle)) / g Delta Y = (1/2) (Vyi + Vyf) (t) Vyf = Vyi - (g)(t) Delta Y = (Vyi)(t) - (1/2)(g)(Tsquared) Vyfsquared = Vyisquared - (2)(g)(Delta Y) 3. The attempt at a solution If someone could just tell me which formulas to use, that would be great. I know I need to solve for t for #1, and need to solve for Vyi for #2.