A small 3 kg object moves in a circle of radius 4 m at a constant speed of 5.5 m/s. 

What is the angular momentum of the object with respect to an axis perpendicular to the circle and through its center? N·m/kg

What is the total acceleration of the object? m/s²

What is the net force acting on the object? N

In what direction is the net force?

Find the kinetic energy of the object. J