paulricar0 07/07/2015 20 min = 20 x 60 s = 1200 s v = d / t = 1200 m : 1200 s = 1 m/s x 3,6 = 3,6 km/h
paulricar0
20 min = 20 x 60 s = 1200 s
v = d / t = 1200 m : 1200 s = 1 m/s x 3,6 = 3,6 km/h