1. The problem statement, all variables and given/known data A ball is thrown straight up with an initial speed of 40 m/s. (Neglect air resistance.) How high does it go? how long does it stay i the air 2. Relevant equations i know the second part is 8 because its basically saying 40m every second divide by acc.(gravity) which is basically 10 and multiply by 2 one second going up and another going down. but im completely lost on the first part 3. The attempt at a solution im not sure but i think i use the formula for displacement? but when i tried the answer was wrong.