Recent content by qwerty3

its ok thanks i get it now and +ve means positive :P sorry for the confusion

Actually what i want to know is that my way with vectors how do i split up the x and y component as with y the kmv is +ve

ok i will show it its just that its hard to type it all up Total force = -mgj -kmv Newtons 2nd law a = -gj -kv => a + kv = -gj Try integrating factor e^(int kdt)= e^(kt) d/dt (e^kt v) = -ge^kt j e^kt v = -g/k e^kt j + C t=0 v=u => C = u + g/k j v = (u + g/k j)e^-kt -...

Well i took upwards as positive and so my mg is -mg.

An aircraft flying in a straight line at constant height h and speed U drops a package on a target at ground level. The package is subject to air resistance whose magnitude is kmv where v is the speed of the falling package, m its mass, and k > 0 a constant. (a) Show that the vertical...