Odpowiedzi

2010-01-31T21:59:02+01:00
W = F * s * cosα
W = F * 5m * cos30
W = a/10kg * 5m * √3
a = gsinα
a = 5m/s^2
W = 1/2N * 5m * √3
W = 2,5√3 J
2 3 2