co znaczą te znaczki *^ i /
m = 1 t = 1000 kg
t = 20 s
S = 400 m
F = ?
S = a t^2 / 2
2 S = a t^2
a = 2 S/ t^2
a = [ 2 * 400 m]/ [ 20 s]^2 = 800 m/ 400 s^2 = 2 m/s^2
F = m*a = 1000 kg * 2 m/s^2 = 2000 kgm/s^2 = 2000 N = 2 kN
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^ - znak potęgi. Używany zazwyczaj w necie :)
/ symbol dzielenia równie popularny co ":".