I'm doing a Ballistic Pendulum Lab and I need the followingequations that should be used en each case to fill out a table:(just the equation)

a)Change in potential energy of pendulum

b)Change in potential energy of ball

c)Initial kinetic energy of pendulum plus ball (right aftercollision)

d)Velocity of ball and pendulum (right after collision)

e)Momentum after collision

f)Momentum before collision

g)Velocity of ball before collision