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m = 4 kg
a = 3 m/s²
t = 2 s
Dit :
Ek = ....... j
Jawab:
a = v/t
v = at
v = 3 . 2
v = 6 m/s
Ek = 1/2 . m . v²
Ek = 1/2 . 4. 6²
Ek = 2 . 36
Ek = 64 Joule