Daję naj ! W ogóle tego nie rozumiem !
1.Oblicz przyspieszenie fiata,który prędkość 120km/h osiągnął w 10 sekund.
2.Zamień jednostki:
80km/h = ? m/s
100m/s = ? km/h
300km/s = ? m/s
20cm/min. = ? km/h
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zadanie 1
Δv = 120km/h = 33m/s
t = 10s
a = Δv/t
a = 33m/s/10s = 3,3m/s²
zadanie 2
80km/h = 22m/s
100m/s = 360km/h
300km/s = 300 000m/s
20cm/min = 0,012km/h
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Pozdrawiam :)
1.
120 km/h = 120 *1000m/3600s = 33,3 m/s
a = v/t = 33,3m/s/10s
a = 3,3 m/s²
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2.
80 km/h = 80*1000m/3600s = 22,2 m/s
100 m/s = 100 * 0,001km/(1/3600)h = 360 km/h
300 km/s = 300 000 m/s
20 cm/min = 0,012 km/h