STATS 101_08_U9_Test_2 - University of Colorado | STATS101_08_U9_Test_2

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STATS 101_08_U9_Test_2 - University of Colorado Unit IX: Test 2 For each of the situations outlined below in questions 1-4 compare (a>b, a<b, or a=b) the momentum of sphere A and sphere B. T... hen offer a brief explanation supporting your response. __6. Padded dashboards in cars are safer in an accident than non-padded ones because they a. increase the impact time. b. decrease the impulse on the occupant. c. decrease the change in momentum of the occupant. - - - - - - - -- - - - - - - - - - - -- - - - - - - -- 11. An 85.0 kg man, sitting in a 110 kg canoe, catches a 5.0 kg cooler, tossed at 5.0 m/s by a friend. a. Is the collision elastic or inelastic? Explain. b. What is the final velocity of the canoe? 12. Suppose two clowns on skateboards are standing motionless on a smooth surface 10.0 m apart. Clown B tosses a 5.0 kg medicine ball to clown A. The medicine ball is traveling with a speed of 7.5 m/s. a. What is the resulting velocity of clown B after throwing the ball? (Be sure to indicate which direction is positive.) b. What is the resulting velocity of clown A after catching the ball? 13. At right is the force-time graph for airbag produced by ACME Safety Co. Would this airbag bring a 75 kg man driving at 10 m/s safely to a stop? Be sure to show work to support your conclusion. [Show More]

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