![]() Internal forces can be attractive or repulsive Law of Conservation of Momentum total momentum of a closed system cannot change linear mass density λ λ, expressed as the number of kilograms of material per meter momentum measure of the quantity of motion that an object has it takes into account both how fast the object is moving, and its mass specifically, it is the product of mass and velocity it is a vector quantity perfectly inelastic collision after which all objects are motionless, the final kinetic energy is zero, and the loss of kinetic energy is a maximum rocket equation derived by the Soviet physicist Konstantin Tsiolkovsky in 1897, it gives us the change of velocity that the rocket obtains from burning a mass of fuel that decreases the total rocket mass from m i mi down to m system object or collection of objects whose motion is currently under investigation however, your system is defined at the start of the problem, you must keep that definition for the entire problem QC21.3.Key Terms center of mass weighted average position of the mass closed system system for which the mass is constant and the net external force on the system is zero elastic collision that conserves kinetic energy explosion single object breaks up into multiple objects kinetic energy is not conserved in explosions external force force applied to an extended object that changes the momentum of the extended object as a whole impulse effect of applying a force on a system for a time interval this time interval is usually small, but does not have to be impulse-momentum theorem change of momentum of a system is equal to the impulse applied to the system inelastic collision that does not conserve kinetic energy internal force force that the simple particles that make up an extended object exert on each other. ISBN 978-2-5 (Extended edition) Binder-ready version ISBN 978-1-9 (Extended edition) 1. Library of Congress Cataloging-in-Publication Data Walker, Jearl Fundamentals of physics / Jearl Walker, David Halliday, Robert Resnick-10th edition. #A CONSTANT EASTWARD HORIZONTAL FORCE OF 70 FREE#Return instructions and a free of charge return shipping label are available at Outside of the United States, please contact your local representative. Upon completion of the review period, please return the evaluation copy to Wiley. Evaluation copies are provided to qualified academics and professionals for review purposes only, for use in their courses during the next academic year.These copies are licensed and may not be sold or transferred to a third party. 222 Rosewood Drive, Danvers, MA 01923, website Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley
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