1. The problem statement, all variables and given/known data A ball is thrown vertically upward with a speed of 25.2 m/s. a)How high does it rise? Answer in units of m. b) How long does it take to reach its highest point? Answer in units of s. c) How long does it take the ball to hit the ground after it reaches its highest point? Answer in units of s. d) What is its velocity when it returns to the level from which it started? Answer in units of m/s. 2. Relevant equations all kinematics equations. I used x=x0 + v0t + (1/2)at^2, I remember. 3. The attempt at a solution I have a thru c - a was 32.37, and b abd c were both 2.57 (parabola was symmetrical) but I have no idea how to solve d, at all.