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Unformatted text preview: Written Homework due Tuesday October 09 3 Abilliardball, movingataspeedofZ.Zmls, strikesanidentical, stationaryballa glancing blow. After the collision, one ball is found to be moving at a speed of l.l mls in a direction making a 60 degree angle with the original line of motion. (a) Find the velocity of the other ball. (b) Gven these data, is the collision elastic or inelastic? Physics 221Fall2007 Written Homework due Tuesday October 09 4 An 80 kg sttrdent stands on a 20 kgraft that can move without friction or drag on a lake. Both areinitially atrest. The student suddenly startsto run at a speed of 3.0 m/s with respect to the raft, along its length. (a) Describe and explain what happens to the center o1*u5 of the student / raft system. (b) How fast is the student moving with respect to the water? (c) How fast is the raft moving with respect to the water?...
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This homework help was uploaded on 03/27/2008 for the course PHYS 221 taught by Professor Herrerasiklody during the Fall '08 term at Iowa State.
 Fall '08
 HerreraSiklody
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