Policz jaką pracę może wykonać samochód o masie 2 t który porusza się z szybkością 72km/h.
m = 2 t = 2000 kg
V = 72 km/h = 72 *1000 m/3600 s = 20 m/s
W = ?
W = Ek
W = m * V² /2
W = 2000 Kg * (20 m/s)²/2
W = 2000 kg * 400 m²/s²
W = 8000000 J = 8 MJ
1 M J = 10⁶ J = 1000000 J
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m = 2 t = 2000 kg
V = 72 km/h = 72 *1000 m/3600 s = 20 m/s
W = ?
W = Ek
W = m * V² /2
W = 2000 Kg * (20 m/s)²/2
W = 2000 kg * 400 m²/s²
W = 8000000 J = 8 MJ
1 M J = 10⁶ J = 1000000 J