Odpowiedź :
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
h = 40m
mgh = mv²/2
10*40 = v²/2*2
400*2 = v²
v² = 800
v = √800
v = √2*400
v = 20√2m/s
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
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