Aperson jogs eight complete laps around a 400-m track in a total time of 14.5 min. calculate the average speed and the average velocity in m/s

d = 400 m (8 laps) = 2400 m

t = 14.5 min

v = 0

average t = 14.5 min (60 sec per min) = 870 s/8 laps = 108.75 s per lap

speed = distance /time

400/108.75 sec = 3.67 m/s

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.