Ile wynosi moc silnika samochodu o masie 1300kg, który w czasie 8s rozpędził się do prędkości 90km/h?
m = 1300kg
Δv = 90km/h = 25m/s
t = 8s
P = W/t
W = ΔE = mv²/2
P = mΔv²/2t
P = 1300kg x (25m/s)²/2 x 8s = 50781,25W
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m = 1300kg
Δv = 90km/h = 25m/s
t = 8s
P = W/t
W = ΔE = mv²/2
P = mΔv²/2t
P = 1300kg x (25m/s)²/2 x 8s = 50781,25W
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)