A(n) 775 N man stands in the middle of a

Question

frozen pond of radius 11.2 m. He is un-
able 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
1.3 kg physics textbook horizontally toward
the north shore, at a speed of 6 m/s.
The acceleration of gravity is 9.81 m/s2 .
How long does it take him to reach the
south shore?
Answer in units of s