Răspuns :
d=540m
v=18km/h
________
t=?
________
v=18km/h=18000m÷3600s=5m/s
v=d÷t=>t=d÷v
t=540m÷5m/s
t=108s
v=18km/h
________
t=?
________
v=18km/h=18000m÷3600s=5m/s
v=d÷t=>t=d÷v
t=540m÷5m/s
t=108s