aryanemendes2602 15/12/2017 Ec = m*v^2 / 2 logo:Ec = 21*20^2 / 2Ec = 21*400 / 2 Ec = 8400 / 2Ec = 4200 Joules
aryanemendes2602
Ec = m*v^2 / 2 logo:
Ec = 21*20^2 / 2
Ec = 21*400 / 2
Ec = 8400 / 2
Ec = 4200 Joules