Question

Yes
V of stracture is 2 m/s

lA l ne equaions provided on the exam, to recieve credit. 18) A man on a small boat (mass of man and boat together is 120 kg) throws a 5 kg suitcase to his wife on the doch t. a) (10 pts) assuming there is no friction between the boat and the water, with what velocity do the man and boat move after he throws the suitcase? b) (5 pts) does your answer pass the common sense test? Give specific reasons why or why not. c) (10) How much kinetic energy is added to the system by the throw? d) (5 pts) Where did the energy come from? What form was it in before?

Answer 1

a) The locty vU 6 OM 60 v

is V=2 for the speed of suitcase?

then V for boat and mas system = 2/24 =0.083m/s

KE=60*0.083^2=0.41J