Question

A 735 N man stands in the middle of afrozen pond of radius 7M m. He is unable to get to the other side because of a lack of friction between hisshoes and the ice To overcome this difficulty, he throws his 1.2kg physics textbook horizontally toward the north shore at a speed of 7.0 m/s. How long does it take him to reach the south shore?

Answer 1

Mass ofperson m weight/g735 /9.875 kg tum of bookthrownPbook massof book velocity of book127.08.4 man velocity ofmanv 8.4/75 0.112 m/s Time required to reach southshoredistance (r) /velocity7.0 /0.11262.5s

Answer 2

Apply conservation ofmomentum 735N 74.923kg mass xiniti al velocity mass xfinal velocity 0 (1.2x7)-(74.923x v) 8.4 74.923xv 8.4 74.923 0.1121m/s (0.1121) t 62.44s