Question

Pablo is playing with a hula-hoop (diameter of 112 cm and mass of 858 g). While playing with the hula-hoop, Pablo accidently lets it roll down the driveway towards the street. The driveway is 15.0 m long and has a constant slope of 6 degrees. The hula-hoop starts with a linear speed of 1.30 m/s. Find the linear final velocity of the hula hoop and how long it takes for the hula hoop to reach the bottom of the driveway.