Ek(o) + Ek(l) = 105J
Ek(l)/Ek(o) = 2,5
Ek(o) = 105J - Ek(l)
Ek(o) = 2/5 *Ek(l)
105J- Ek(l) = 0,4 Ek(l)
1,4 Ek (l) = 105 J
Ek = 75 J
Ek = 1/2 *m* v²
v²= 2*Ek / m
v²= 2* 75 J / 2 kg
v² = 75 m²/s²
v=√(75 m²/s²)
v= 8,66 m/s
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Ek(o) + Ek(l) = 105J
Ek(l)/Ek(o) = 2,5
Ek(o) = 105J - Ek(l)
Ek(o) = 2/5 *Ek(l)
105J- Ek(l) = 0,4 Ek(l)
1,4 Ek (l) = 105 J
Ek = 75 J
Ek = 1/2 *m* v²
v²= 2*Ek / m
v²= 2* 75 J / 2 kg
v² = 75 m²/s²
v=√(75 m²/s²)
v= 8,66 m/s