dane: m = 72 kg, h = 3 m, t = 4,5 s
szukane: P = ?
P = W/t = ∆E/t = (E2 - E1)/t
E1 = 0
E2 = mgh
P = (E2 - E1)/t = mgh/t = (72 kg • 3 m • 9,81 m/s²)/4,5 s = 480,88 W
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dane: m = 72 kg, h = 3 m, t = 4,5 s
szukane: P = ?
P = W/t = ∆E/t = (E2 - E1)/t
E1 = 0
E2 = mgh
P = (E2 - E1)/t = mgh/t = (72 kg • 3 m • 9,81 m/s²)/4,5 s = 480,88 W