Which option describes a similarity between scientific laws and scientific theories? 1.Both can change in light of new evidence. 2.Both explain how a phenomenon works. 3.Both are purely observations of nature. 4.Both are suggested explanations that are starting points.

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point