1. The problem statement, all variables and given/known data A student throws a ball downward at a velocity of 8.0m/s from a height of 25m. How long until it hits the ground? What is the velocity of the ball as it hits the ground. 2. Relevant equations What is thee formula when simplifying for T(time)? 3. The attempt at a solution When using the formula d=ViT + 1/2a*d I get 3.4s, but the answer is 1.6s.