Friction and Projectile Question?

A long piston pushes a 100 kg object up a 10 m long incline that makes an angle at 60* with the horizontal. The piston pushes the object up the incline with a force of 2000 N and at the top of the incline the object flies off and lands on the platform below. If the object lands 20 m from the base of the incline, what is the coefficient of kinetic friction on the incline?