We are doing force and work right now and I'm completely lost. I don't even know what formulas I'm supposed to use or anything. Any help on getting any of these started or more would be greatly appreciated. Hopefully if I can get these first couple figured out, the rest will start to make sense. 1) A raindrop of mass m = 3.35 x 10^-5 kg falls vertically at constant speed under the influence of gravity and air resistance. After the drop has fallen 100m, what is the work done a) gravity and b) by air resistance. 2) A block of mass 2.50kg is pushed 2.20m along a frictionless horizontal table by a constant 16.0N force directed 25 degrees below the table. Determine the work done by a) the applied force b) the normal force exerted on the table, and c) the force of gravity. d) Determine the total work done on the block. 3) Batman, whose mass is 80.0kg is holding onto the free end of a 12.0m rope, the other end of which is fixed to a tree limb above. He is able to get the rope in motion as only Batman knows how, eventually getting it to swing enough so that he can reach a ledge when the rope makes a 60 degree angle with the vertical. How much work was done against the force of gravity in this maneuver?