1. The problem statement, all variables and given/known data as a new physics student, i'm not sure how to derive the formula i need to answer this question. there's a ramp that rises 1m in height and 20m in length. a block weighing 20,000kg needs to be pushed up it. (yup, we're building the pyramids). how much force is needed to push the block up the ramp? 2. Relevant equations so i know that net force = mass * acceleration. i also think that the net force downhill along this ramp is 1m/20m or .05% of the block's weight, which is 1000kg. the book tells me the answer is 9800N. 3. The attempt at a solution 9800 N = 20,000kg * acceleration where N = kgm/s2 acceleration = .49 m/s2, but why? and i suppose the book is rounding in some way to come up with 9800 N instead of 10,000?