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dane:
m=400g=0.4kg
V= 130km/h= 36,1m/s
E=0.4x(36,1)²/2
E=260,6J
m - 400g = 0.4kg Ek - ?
v - 130km = 36,1m/s
Rozwiązanie :
Ek = m x v2 /:2
Ek = 0.4kg x (36,1m/s)2 / : 2
Ek ~ 521 /: 2
Ek ~ 260 J