Answer this will mark brainliest and 3 more times on other questions if you get it right

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

Anton created a chart listing different types of materials. which best complete the chart?

How can you tell the difference between rough er from smooth er?