In calculating the results of a collision, we assume the collision occurs in a closed and isolated system. In a closed and isolated system, A: the objects colliding are coasting, not powered.

B: no forces outside the system are affecting the collision.

C: A, B, and C are true.

D: friction can be ignored.

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

3x + 2x = both people using the same measure of like 5x = x= 25 meters per second. 25ms. it takes them 4 seconds to