A 714 N student stands in the middle of a frozen pond having a radius of 5.2 m. He is unable to get to the oth?

A 714 N student stands in the middle of a frozen pond having a radius of 5.2 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 2.8 kg physics textbook horizontally toward the north shore at a speed of 5.4 m/s. How long does it take him to reach the south shore?