F*S = m*v^2/2
F = m*v^2/(2s) = 0.002*400^2/(2*0.5) = 320 Н
или по-другому
s = a*t^2/2 = v^2/(2a)
a = v^2/(2s)
F
F*S = m*v^2/2
F = m*v^2/(2s) = 0.002*400^2/(2*0.5) = 320 Н
или по-другому
s = a*t^2/2 = v^2/(2a)
a = v^2/(2s)
F