1.Zamień jednostki:
a) 2,5A - mA
b) 2kW - W
c) 15m/s - km/h
2. Przekształć wzor:
s= 1/2at2
t=?
a)
1 A = 1000 mA
2,5 A = 2,5 *1000 = 2500 mA
b)
1 kW = 1000 W
2 kW = 2 *1000 W = 2000 W
c)
1 m/s = 1/1000 km /1/3600 h = 1/100 * 3600 1 = 3,6 km/h
15 m/s = 15*3,6 km/h = 54 km/h
zad.2
s = a * t² /2
2s = a * t²
t² = 2s/a
t = √2s/a
a) 2,5A -2500 mAb) 2kW -2000 Wc) 15m/s - 54 km/h
s=½ at²
2s=at²
t²=2s/a
t=√(2s/a)
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a)
1 A = 1000 mA
2,5 A = 2,5 *1000 = 2500 mA
b)
1 kW = 1000 W
2 kW = 2 *1000 W = 2000 W
c)
1 m/s = 1/1000 km /1/3600 h = 1/100 * 3600 1 = 3,6 km/h
15 m/s = 15*3,6 km/h = 54 km/h
zad.2
s = a * t² /2
2s = a * t²
t² = 2s/a
t = √2s/a
a) 2,5A -2500 mA
b) 2kW -2000 W
c) 15m/s - 54 km/h
s=½ at²
t=?
2s=at²
t²=2s/a
t=√(2s/a)