Ajoule, which is a unit of work, is equal to blank space question options: a a newton times a meter b a newton times a second c a newton divided by a meter d a newton divided by a second

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.