Ok these are the equations I am allowed to use.
Ep=mg(delta)h
w=fd
v_av=(delta)d/(delta)t
(delta)d=v1(delta)t^2 + 1/2a(delta)t^2
V2=V1^2 + 2a(delta)d
w=work done(j)
f=force(Newtons)
d=distance(m)
v_av=average velocity
t=time(secs)
v2=final velocity
v1=initial velocity
a=acceleration...