The transfer of energy that takes place between gravitational potential energy and kinetic energy on a roller coaster demonstrates which of the following laws? a - The Law of Conservation of Energy
b - The Law of Conservation of Matter
c - The Law of Conservation of Living Things
d - The Law of Conservation of Mechanical Energy

Which of the following is a homogenous mixture? o a. a toy box filled with toys o b. blood o c. trail mix o d. spaghetti and meatballs submit

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.