You knitted scarves for all 12 of your cousins for christmas presents. now your hands and fingers are tingling and moving your wrists is very painful. you probably have

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

What is the farthest destination to date for a human spaceflight mission?

Suppose you could go back in time to interview henri becquerel on the day he discovered radioactivity. from his perspective, write an account of the discovery.