Odpowiedzi

2009-11-24T12:45:40+01:00
G = 10 m/s²
h = 40m

mgh = mv²/2

10*40 = v²/2*2

400*2 = v²

v² = 800

v = √800

v = √2*400

v = 20√2m/s
2009-11-24T12:48:37+01:00
Dane:
g=10 m/8²
h=40m

mgh=mv²/2

10×40=v₂/2//*2

400×2=v²

v²=800

v=√800

v=√2×400
v=20√2m/s