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Ek= 0,5 Joule
Dit: v..?
Peny: Ek= m.v² ⇔ v = ⇒ v= ⇒ v= ⇒ v= ⇒ v= 5,78 m/s
m= 30 g ⇒ 30/1000= 0,03 kg
Ek= 0,5 J
Dit:
v=..?
Penye:
v²= Ek/(1/2×m)
v²= 0,5/(1/2×0,03)
v²= 0,5/0,015
v²= 33,33
v= √33,33
v= 5,77 m/s