A 4.0kg object is released (position 1) from rest while initially in contact with a spring compressed by 40.0cm. The spring constant is 600.0 J, and the incline is frictionless. Position 2 corresponds to where the object reaches its maximum position up the incline before sliding back down
a) The object's gravitational potential energy is maximum at position 1.
b) The object's kinetic energy is maximum at position 1.
c) The spring's potential energy is maximum at position 2.
d) The object's velocity is maximum at position 2.
