Initial State: A child on a sled is in motion at the bottom of a small hill. Final State: The child is in motion at the top of the small hill.
Notes: The system includes the child and the Earth. Resistance forces are negligible. The child glides between initial and final state without any effort.
Draw the LOL chart

What object a collides with object b and bounces back its final momentum is?

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line

Does anyone have the answers to online physics course plato course physics, semester a v3.0