Okay so this is the problem: "On a certain planet, a ball is thrown upward with a speed of 33 feet per second from the edge of a cliff 44 feet above the ground. When does it hit the ground? (use a(t) = −22).
I already know that the answer is 4 seconds but I don't understand how to get there. Can someone please guide me and explain to me the process of solving this problem? Thank you!