MasteringPhysics8a

# MasteringPhysics8a - MasteringPhysics: Assignment Print View

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MasteringPhysics: Assignment Print View http://session.masteringphysics.com/myct/assignmentPrint?assignmentI. .. 2 of 10 12/19/2007 2:45 AM Express your answer numerically in joules. ANSWER: = -517 J A Game of Frictionless Catch Chuck and Jackie stand on separate carts, both of which can slide without friction. The combined mass of Chuck and his cart, , is identical to the combined mass of Jackie and her cart. Initially, Chuck and Jackie and their carts are at rest. Chuck then picks up a ball of mass and throws it to Jackie, who catches it. Assume that the ball travels in a straight line parallel to the ground (ignore the effect of gravity). After Chuck throws the ball, his speed relative to the ground is . The speed of the thrown ball relative to the ground is . Jackie catches the ball when it reaches her, and she and her cart begin to move. Jackie's speed relative to the ground after she catches the ball is . When answering the questions in this problem, keep the following in mind: The original mass of Chuck and his cart does not include the mass of the ball. 1. The speed of an object is the magnitude of its velocity. An object's speed will always be a nonnegative quantity. 2. Part A Find the relative speed between Chuck and the ball after Chuck has thrown the ball. Hint A.1 How to approach the problem All this question is asking is: "How fast are Chuck and the ball moving away from each other?" If two objects are moving at the same speed (with respect to the ground) in the same direction, their relative speed is zero. If they are moving at the same speed, , in opposite directions, their relative speed is
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## This note was uploaded on 10/28/2008 for the course PH 141 taught by Professor Toki during the Fall '08 term at Colorado State.

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MasteringPhysics8a - MasteringPhysics: Assignment Print View

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