4

A. x^2 + y^2 + z^2 = (ct)^2    
x'^2 + y'^2 + z'^2 = (ct')^2    
x' = (x-vt)/sqrt(1-(v^2)/(c^2))    
t' = (t-(v/c^2)*x)/sqrt(1-(v^2)/(c^2))
y' = y z' = z    
B. l(v) = l0*sqrt(1-(v^2)/(c^2))    
C. p = mv/sqrt(1-(v^2)/(c^2))    
D. a = F/m = deltav/deltat ac = F/m * (1-(v^2/c^2))^(3/2)    
W=deltaEkin = mc^2(1/sqrt(1-(v^2)/(c^2)) - 1)