Unformatted text preview:  " 77777 77777 29. A car rounds an unbanked curve with a radius of 52 m at a speed of 12 m/s. What minimum coefﬁcient of friction
must exist between the road and tires to prevent the car from slipping? @028 (2) 0.071 (3) 0.16 (4) 0.44 (5) 0.33 30. A car rounds an unbanked curve with a radius of 52 m at a. speed of 6 m/s. What minimum coefﬁcient of friction must
exist between the road and tires to prevent the car from slipping? (1) 0.071 (2) 0.28 (3) 0.16 (4) 0.44 (5) 0.33 31. A car rounds an unbanked curve with a radius of 52 m at a speed of 9 m/s. What minimum coefﬁcient of friction must
exist between the road and tires to prevent the car from slipping? (1) 0.16 (2) 0.071 (3) 0.28 (4) 0.44 (5) 0.33 32. A car rounds an unbanked curve with a radius of 52 m at a speed of 15 m/s. What minimum coefﬁcient of friction
must exist between the road and tires to prevent the car from slipping? (1) 0.44 (2) 0.071 (3) 0.16 (4) 0.28 (5) 0.33 33. A 20 kg object sitting at rest is struck elastically in a headon collision with a 10 kg object initially moving at +3.0 m/s.
Find the ﬁnal velocity of the 20 kg object after the collision. (l) 2.0 m/s (2) +1.0 m/s (3) +3.0 m/s (4) +4.0 m/s (5) +5.0 m/s 34. A 20 kg object sitting at rest is struck elastically in a head—on collision with a. 10 kg object initially moving at +1.5 m/s.
Find the ﬁnal velocity of the 20 kg object after the collision. (1) +1.0 m/s (2) +2.0 m/s (3) +3.0 m/s (4) +4.0 m/s (5) +5.0 m/s 35. A 20 kg object sitting at rest is struck elastically in a headon collision with a 10 kg object initially moving at +4.5 m/s.
Find the ﬁnal velocity of the 20 kg object after the collision. (1) +3.0 m/s (2) +1.0 m/s (3) +2.0 m/s (4) +4.0 m/s (5) +5.0 m/s 36. A 20 kg object sitting at rest is struck elastically in a headon collision with a 10 kg object initially moving at +6.0 m/s.
Find the ﬁnal velocity of the 20 kg object after the collision. (1) +4.0 m/s (2) +1.0 m/s (3) +3.0 m/s (4) +2.0 m/s (5) +5.0 m/s 37. An object of mass 15 kg is moving north on an icy pond (frictionless surface) with a velocity of 3.0 m/s, and collides
with a 5 kg object moving east on the icy pond with a velocity of 5.0 m/s. The two objects stick together after the
collision. What is the magnitude of the ﬁnal momentum of the combined system? @2 kgm/s (2) 60 kgm/s (3) 71 kgm/s (4) 88 kg‘m/s (5) 45 kgm/s 38. An object of mass 15 kg is moving north on an icy pond (frictionless surface) with a velocity of 3.0 m/s, and collides
with a 5 kg object moving east on the icy pond with a velocity of 8.0 m/s. The two objects stick together after the
collision. What is the magnitude of the ﬁnal momentum of the combined system? (1) 60 kgm/s (2) 52 kgm/s (3) 71 kgm/s (4) 88 kgm/s (5) 45 kgm/s 179 ...
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 Spring '06
 Buchler

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