You are standing on a bridge over a creek, holding a stone 20 ft. above the water

You release the stone. How long will it take the stone to hit the water?

You take another stone and toss it straight up with an initial velocity of 30 ft. per second. How long will it take the stone to hit the water?

If you throw a stone straight up in the air with the initial velocity of 50 ft. per second, could the stone reach a hight of 60 ft. above the water?

Can you help me? These story problemas always confuse me.~Eponine