Odpowiedź:
A) v=s/t
v=5/4=1 1/4m/s
B) s=v*t
10*6*2=120s=2min
s=5/4*120s=150m
C) t=s/v
25m*8=200m=2km
t=200m:5/4=250s
Wyjaśnienie:
a)
s=25m
t=10s
v=s/t
v=25m/10s
v=2,5m/s
b)
t=2min=120s
s=2,5m/s*120s
s=300m
c)
s=2km=2000m
Oblicz t
t=s/v
t=2000m /2,5m/s
t=800s=13min20s
