Specialized visual receptors that assist mostly in nighttime vision are a. cones b. rods c. fovea d. optic disks

Could someone me find the answer to this problem.

Need this now! do pilots live long

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.