1. The problem statement, all variables and given/known data An astronaut in his space suit can throw a ball a maximum distance dmax = 9 m on the surface of the earth. For a given speed of the ball, what angle to the horizontal q (in degrees) will yield the greatest range? 45 degrees If the ball is thrown at this same angle q, what speed will produce this greatest range (9 m) ? 9.3m/s How far can he throw the ball on a planet where g1 = 22 m/s2? 4.009 What height will the ball reach on this "maximum range" trajectory? (on the planet where g1 = 22 m/s2)? I am having a problem with this one. I need help! 2. Relevant equations v(y) = v(initial)*sin(angle) v(y) = v( y initial) + at y = y(initial) + 0.5(v(inital) + v)t 3. The attempt at a solution v(y) = 9sin(45) = 6.57 0 = 6.57 + 22(t) t = 0.298 y = 0 + 0.5(6.57 + 0)*(0.298) y = 0.978 Where did I go wrong? Did I need the vertial acceleration? thanks!