PHYS 216 Final Exam latest version

PHYS 216 Final Exam latest version

Author: Abraham Nolito


1. (TCO 1) Which of the following situations is not possible? (Points : 10)
2. (TCO 2) In accordance with Newton's third law, _____. (Points : 10)
3. (TCO 5) From the shore, you observe a buoy in the ocean rising and falling with the waves. You determine it takes 2 s for the buoy to go down and up again (one complete oscillation), and you estimate the distance between the waves is 5 m. Approximately how fast are the waves moving? (Points : 10)
4. (TCO 3) An object is rotating at 44 r/s and has an angular acceleration of -6 r/s2. After 7 s, the angular velocity is _____.
(Points : 10)
5. (TCO 6) In a collision between two objects, _____. (Points : 10)
6. (TCO 3) Three race cars are even with each other going around a turn on a racetrack. Which of the following statements is true regarding the speeds and angular velocities of the cars? (Points : 10)
7. (TCO 7) Two objects, one of mass 20 kg and the other of mass 40 kg, are dropped from the top of a building. When they hit the ground (neglecting air resistance), (Points : 10)
8. (TCO 6) A 6 kg ball moving in the +x direction at 3 m/s collides head-on with a 3 kg ball initially at rest. The collision is inelastic. After the collision, the 3 kg ball is traveling at 2m/s in the +xdirection. The velocity of the 6 kg ball after the collision is (Points : 10)
9. (TCO 7) Neglecting air resistance, which is the approximate speed of an object that is dropped from rest, after it has fallen 5.7 m? (Points : 10)
10. (TCO 8) Which of the following is not a main idea in quantum theory? (Points : 10)
11. (TCO 5) For a mass attached to a spring sliding back and forth on a frictionless track, which of the following statements is true? (Points : 10)
12. (TCO 5) Which of the following statements about sound is true? (Points : 10)
13. (TCO 5) A 5 kg mass is attached to a spring with a spring constant k = 6 N/m and sliding back and forth on a frictionless track. Determine the approximate frequency of the oscillations. (Points : 10)
14. (TCO 4) A torque of 12 N m is applied to a wheel with a moment of inertia of 3 kg m2. The angular acceleration of the wheel is (Points : 10)
15. (TCO 5) A spring with a spring constant is stretched by 0.2 m. How much potential energy is stored in the spring? (Points : 10)
16. (TCO 8) Observers in two frames of reference are moving past each other at a constant velocity. Which statement is true regarding clocks in the two frames? (Points : 10)
17. (TCO 6) Two football players are moving toward each other in a straight line. Number 56 has a mass of 122 kg and a velocity of 6 m/s (in the positive x-direction). Number 22 has a mass of 102 kg and a velocity of 3 m/s (in the negative x-direction). The two players jump into the air and collide perfectly inelastically (they stick together afterwards). Determine the velocity (magnitude and direction) of players after the collision before they hit the ground. (Points : 20)

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