Solution for On-Line Homework 4 Acceleration II, Inertia I

# Solution for On-Line Homework 4 Acceleration II, Inertia I...

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Solution for On-Line Homework 4 Acceleration II, Inertia I Solution to On-Line Homework Problem 4.1() Problem: If there is no friction on an object in mo- tion, and nothing else is interacting with the object, what happens to the object’s velocity? Choose the best answer. Select One of the Following: (a) It slows down because there is nothing to keep it going, so the velocity decreases. (b-Answer) It keeps going at the same speed and in the same direction, because there is nothing to change either, so the velocity is constant. (c) It keeps going at the same speed, because there is nothing to change it, so the velocity is constant. (d) It keeps going in the same direction, because there is nothing to change it, so the velocity is constant. (e) The velocity increases. Solution Nothing. If there are no interactions, the velocity remains constant because there is nothing to change the speed or

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Unformatted text preview: the direction of the motion. Total Points for Problem: 2 Points 1 Solution to On-Line Homework Problem 4.2(Which Has More Inertia?) Problem: 1000kg of lead has more inertia than 1000kg of Styro-foam. Select One of the Following: (a) True (b-Answer) False Solution False. They both have the same inertia since they both have the same mass. Total Points for Problem: 3 Points Solution to On-Line Homework Problem 4.3(Friction Does What?) Problem: Friction always increases the speed of an object. Select One of the Following: (a) True (b-Answer) False Solution False. Normally friction decreases the speed of an object, and kinetic friction always slows down the speed of an object relative to the surface that it is sliding over. 2 Total Points for Problem: 2 Points 3...
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## This note was uploaded on 09/25/2008 for the course PHYS 2054 taught by Professor Stewart during the Fall '08 term at Arkansas.

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Solution for On-Line Homework 4 Acceleration II, Inertia I...

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