1. The figures below show the same block in three different states of motion. Which of the following must be the reason why the block does not move in Figure A? A. The block is too heavy to move. B. There is too much friction between the floor and the block. C. There are no forces acting on the block, either vertically or horizontaly. D. There are forces acting on the block in the vertical component but not in horizontal component and these ferces are equal in magnitude Satc Force Krete Fuor appled Applec hicton 7. A 5-kg suitcase is hanging straight down from your hand as you ride a 6-m escalator. Your hand exerts force on the suitcase and this force does work. Which of the following statements is true? A. The work done on the plastic bag as you ride up is equal to the work done as you ride down. B. The work done on the plastic bag as you ride up is lesser than the work done as you ride down. C. The work done on the plastic bag as you ride up is greater than the work done as you ride down. D. None of these. 8. A waiter lifts a tray of spaghetti and drinks with a total mass of 2 kg from the table. He then delivers the tray to the customer on the other side of the restaurant and then places it on the table. If the waiter walks across the room with a constant speed, how much work does he do on the tray while walking? C. More than zero joules A. Zero Joules D. None of these B. Less than zero joules
1. The figures below show the same block in three different states of motion. Which of the following must be the reason why the block does not move in Figure A? A. The block is too heavy to move. B. There is too much friction between the floor and the block. C. There are no forces acting on the block, either vertically or horizontaly. D. There are forces acting on the block in the vertical component but not in horizontal component and these ferces are equal in magnitude Satc Force Krete Fuor appled Applec hicton 7. A 5-kg suitcase is hanging straight down from your hand as you ride a 6-m escalator. Your hand exerts force on the suitcase and this force does work. Which of the following statements is true? A. The work done on the plastic bag as you ride up is equal to the work done as you ride down. B. The work done on the plastic bag as you ride up is lesser than the work done as you ride down. C. The work done on the plastic bag as you ride up is greater than the work done as you ride down. D. None of these. 8. A waiter lifts a tray of spaghetti and drinks with a total mass of 2 kg from the table. He then delivers the tray to the customer on the other side of the restaurant and then places it on the table. If the waiter walks across the room with a constant speed, how much work does he do on the tray while walking? C. More than zero joules A. Zero Joules D. None of these B. Less than zero joules
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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Transcribed Image Text:1. The figures below show the same block in three different states of motion. Which of the following must be
the reason why the block does not move in Figure A?
A. The block is too heavy to move.
B. There is too much friction between the floor and the block.
C. There are no forces acting on the block, either vertically or horizontally.
D. There are forces acting on the block in the vertical component but not in
horizontal component and these ferces are equal in magnitude.
Fuor
Slatc
Force
appled
7. A 5-kg suitcase is hanging straight down from your hand as you ride a 6-m escalator. Your hand exerts
force on the suitcase and this force does work. Which of the following statements is true?
A. The work done on the plastic bag as you ride up is equal to the work done as
you ride down.
B. The work done on the plastic bag as you ride up is lesser than the work done
as you ride down.
C. The work done on the plastic bag as you ride up is greater than the work done
as you ride down.
D. None of these.
8. A waiter lifts a tray of spaghetti and drinks with a total mass of 2 kg from the table. He then delivers the
tray to the customer on the other side of the restaurant and then places it on the table. If the waiter walks across
the room with a constant speed, how much work does he do on the tray while walking?
C. More than zero joules
A. Zero Joules
D. None of these
B. Less than zero joules
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