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# ch4sec2 - Concept Check Newtons 1st Law A book is lying at...

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Concept Check – Newton’s 1 st Law A book is lying at rest on a table. The book will remain there at rest because: 1. there is a net force but the book has too much inertia 2. there are no forces acting on it at all 3. it does move, but too slowly to be seen 4. there is no net force on the book 5. there is a net force, but the book is too heavy to move

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Concept Check – Newton’s 1 st Law A book is lying at rest on a table. The book will remain there at rest because: 1. there is a net force but the book has too much inertia 2. there are no forces acting on it at all 3. it does move, but too slowly to be seen 4. there is no net force on the book 5. there is a net force, but the book is too heavy to move There are forces acting on the book, but the only forces acting are in the y-direction. Gravity acts downward, but the table exerts an upward force that is equally strong, so the two forces cancel, leaving no net force.
Concept Check – Newton’s 1 st Law (2) A hockey puck slides on ice at constant velocity. What is the net force acting on the puck? 1. more than its weight 2. equal to its weight 3. less than its weight but more than zero 4. depends on the speed of the puck 5. zero

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Concept Check – Newton’s 1 st Law (2) A hockey puck slides on ice at constant velocity. What is the net force acting on the puck? 1. more than its weight
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## This note was uploaded on 04/12/2011 for the course PHYS 1310 taught by Professor Staff during the Spring '11 term at North Texas.

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ch4sec2 - Concept Check Newtons 1st Law A book is lying at...

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