Type the correct answer in the box. A car accelerates from 4 meters/second to 16 meters/second in 4 seconds. The car’s acceleration is__BLANK__ meters/second2.

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