w czasie I 10 s
s = 40 m
t = 10 s
V = s/t
V = 40m/10s = 4 m/s
w czasie ostatnich 20 s:
s = 10 m
t = 20 s
V = 10m/20 s
V = 0,5 m/s prędkość średnia = całkowita droga/całkowity czas
V = 50 m/30s
V = 1,67 m/s
v = s/ ta) v = 40m/10s = 4 m/sb)v = 10 m / 20 s = 1/2 m/sc)v= 50m / 30s = 1 i 2/3 m / s
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w czasie I 10 s
s = 40 m
t = 10 s
V = s/t
V = 40m/10s = 4 m/s
w czasie ostatnich 20 s:
s = 10 m
t = 20 s
V = s/t
V = 10m/20 s
V = 0,5 m/s prędkość średnia = całkowita droga/całkowity czas
V = 50 m/30s
V = 1,67 m/s
v = s/ t
a)
v = 40m/10s = 4 m/s
b)
v = 10 m / 20 s = 1/2 m/s
c)
v= 50m / 30s = 1 i 2/3 m / s