A simple machine has an IMA of 7. If the effort force of 5N is applied over a distance of 4m, what is the ideal resistance force, and how far does the load travel?a) Fr = 0.71 N and dr = 0.57 m. b) Fr = 0.71 N and dr = 28 m. c) Fr = 35 N and dr = 0.57 m. d) Fr = 35 N and dr = 28 m.

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.