Odpowiedź:
1. Dane:
[tex]t = 10min = 60s \times 10min = 600s \\ w = 1200j[/tex]
Szukane:
P = ?
P = W/t
P = 1200J / 600s
P = 2W
2. Dane:
m = 2kg
v = 2m/s
Szukane:
Ek = ?
Ek =
[tex] \frac{mv {}^{2} }{2} [/tex]
Ek =
[tex] \frac{2kg \times (2 \frac{m}{s}) {}^{2} }{2} [/tex]
Ek = 4J
3. Dane:
v = 4m/s
g = 10m/s²
Szukane:
h = ?
h =
[tex] \frac{v {}^{2} }{2g} [/tex]
h =
[tex] \frac{(4 \frac{m}{s}) {}^{2} }{2 \times 10 \frac{m}{s {}^{2} } } [/tex]
h =
[tex] \frac{16 \frac{m}{s} }{20 \frac{m}{s {}^{2} } } [/tex]
h = 0,8m
