t = 40 s
v = 8 m/s
s = ?
s = v*t
s = 8 m/s * 40 s
s = 320m
Ruch jednostajny, a więc wzór:
v = s/t /*t
v*t = s
s = v*t = 8 m/s * 40 s = 320 m
Odp. Tunel ma długość 320 m
Myślę, że pomogłam :-)
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t = 40 s
v = 8 m/s
s = ?
s = v*t
s = 8 m/s * 40 s
s = 320m
t = 40 s
v = 8 m/s
s = ?
Ruch jednostajny, a więc wzór:
v = s/t /*t
v*t = s
s = v*t = 8 m/s * 40 s = 320 m
Odp. Tunel ma długość 320 m
Myślę, że pomogłam :-)