A 712 N student stands in the middle of a frozen pond having aradius of 5.9 m. He is unable to get to the other side because of alack of friction between his shoes and the ice. To overcome thisdifficulty, he throws his 2.2 kg physics textbook horizontallytowards the north shore at a speed of 6.0 m/s. How long does ittake him to reach the south shore?