joe forgot his homework at home. he runs home to get it. he accelerates from 0 to 15m/s in 5 seconds, runs at 15m/s for 50 seconds, and then slows down from 15m/s to a stop in 3 seconds. what is the acceleration

15m/s is his running speed which is faster than the around 28mph limit for humans and he stops in 3 seconds with division he slows down at a rate of 5 meters per second which means he loses 5m/s velocity per second so 5meters per second per second