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Unformatted text preview: read in (ii) 1) 15N 2) 30N 3) 60N 4) Dont know Q4.8 A 5000 lb truck is filled with an additional 1000 lbs of birds. Someone beats on the side of the truck to make the birds fly around. What is the reading on the scale? 1) Less than 5000 lbs 2) 5000 lbs 3) Between 5000 & 6000 lbs 4) 6000 lbs 5) Greater than 6000 lbs 4) Dont know Q4.9 If you press a book flat against a vertical wall with your hand, in what direction is the friction force exerted by the wall on the book? 1) Down 2) Up 3) Out from the wall 4) Into the wall 5) Dont know Q4.10 A friend is sitting on a sled and you push or pull her along at a constant velocity. Which case allows you to use less force? 1) Pushing her from behind with a force that is 30 deg below the horizontal 2) Pulling an attached rope with a force that is 30 deg above the horizontal. 3) Theyre the same force 4) Dont know...
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This note was uploaded on 04/07/2010 for the course MA 141 taught by Professor Zeck during the Spring '10 term at Quebec TroisRivieres.
 Spring '10
 zeck
 Math

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