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9. You throw a ball vertically upward. After the ball has left your hand and is moving upward, what forces, if any, act on the ball? only an upward force b) an upward and a downward force c) no forces d) only a downward force

9. You throw a ball vertically upward. After the ball has left your hand and is moving upward, what forces, if any, act on the ball? only an upward force b) an upward and a downward force c) no forces d) only a downward force

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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This is a practice exam, please help me with questions 9, 10, 11.

9. You throw a ball vertically upward. After the ball has left your hand and is moving upward, what forces, if any, act on the ball? a) only an upward force b) an upward and a downward force c) no forces d) only a downward force 10. An out-of-gas car is rolling over the top of a hill at speed v as shown in the diagram at right. The two forces shown are the normal force (n) and the force of gravity (FG). At this instant, а) п> FG b) п<FG c) n= FG d) We can't determine the relationship without knowing the specific value for the speed v. 2013 Pearson Education, Inc 11. You are sitting on a chair. The chair pushes up on you. What is the reaction to this force? a) the chair pushing down on the earth b) you pulling up on the earth through gravitational attraction c) the earth pushing up on the chair d) you pushing down on the chair
Transcribed Image Text:9. You throw a ball vertically upward. After the ball has left your hand and is moving upward, what forces, if any, act on the ball? a) only an upward force b) an upward and a downward force c) no forces d) only a downward force 10. An out-of-gas car is rolling over the top of a hill at speed v as shown in the diagram at right. The two forces shown are the normal force (n) and the force of gravity (FG). At this instant, а) п> FG b) п<FG c) n= FG d) We can't determine the relationship without knowing the specific value for the speed v. 2013 Pearson Education, Inc 11. You are sitting on a chair. The chair pushes up on you. What is the reaction to this force? a) the chair pushing down on the earth b) you pulling up on the earth through gravitational attraction c) the earth pushing up on the chair d) you pushing down on the chair
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