You are going sledding with your friends, sliding down a snowy hill. friction can't be ignored. riding solo on your sled, you have a certain acceleration. would the acceleration change if you let a friend ride with you, increasing the mass?

If the sloped plane were frictionless, then the mass of the object would not have any effect on the acceleration of the object as it slides down the slope. However, if there is friction, the weight would be a necessary force to overcome which results in the decrease of the acceleration. In equation form:
a = g sin θ (frictionless)
a = g sin θ - W cos θ (with friction)

Iread this book last year so take this with a grain of salt.gene jumps from the tree to compete with finny due to the fact that gene is always trying to do better than finny. he is put under the grasp of peer pressure due to finny almost forcing him to do this. ever since he first jumped finny kept pressuring him to jump since he thought gene enjoyed jumping.rather than uses this answer you should probably just reread chapters 3-4