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Chapter 2: The Momentum Principle

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Matter & Interactions
Pages: 45 - 87
Matter & Interactions

Matter & Interactions

Book edition 4th edition
Author(s) Ruth W. Chabay, Bruce A. Sherwood
Pages 1135 pages
ISBN 9781118875865

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Illustration

128 Questions for Chapter 2: The Momentum Principle

  1. A cart rolls with low friction on a track. A fan is mounted on the cart, and when the fan is turned on, there is a constant force acting on the cart. Three different experiments are performed:

    Found on Page 84

  2. Consider the three experiments described in Problem 30. Figure 2.58 displays four graphs of Fnet, x, the x component of the net force acting on the cart, vs. time. The graphs start when the cart is at rest, and end when the cart is again at rest. Match the experiment with the graph

    Found on Page 84

  3. Apply the general results obtained in the full analysis of motion under the influence of a constant force in Section 2.5 to answer the following questions. You hold a small metal ball of mass m a height h above the floor. You let go, and the ball falls to the floor. Choose the origin of the coordinate system to be on the floor where the ball hits, with y up as usual. Just after release, what are yi and vyi? Just before hitting the floor, what is yf? How much time ∆t does it take for the ball to fall? What is vfy just before hitting the floor? Express all results in terms of m, g, and h. How would your results change if the ball had twice the mass?

    Found on Page 85

  4. You observe three carts moving to the left. Cart A moves to the left at nearly constant speed. Cart B moves to the left, gradually speeding up. Cart C moves to the left, gradually slowing down. Which cart or carts, if any, experience a net force to the left?

    Found on Page 81

  5. A system is acted upon by two forces, <18,47,-23>Nand<-20,-13,41>N. What is the net force acting on the system?

    Found on Page 82

  6. A truck driver slams on the brakes and the momentum of the truck changes from<65,000,0,0>kg.m/sto<26,000,0,0>kg.m/sin4.1sdue to a constant force of the road on the wheels of the truck. As a vector, write the net force exerted on the truck by the surroundings

    Found on Page 82

  7. Question: An electron passes location (0.02,0.04,-0.06)m, and 2μslater is detected at location (0.02,1.84,-0.86)m, (1 microsecond is1×10-6s). a) What is the average velocity of the electron? b) If the electron continues to travel at this average velocity, where will it be in another 5μs

    Found on Page 45

  8. You hang a 10 kg mass from a copper wire, and the wire stretches by .

    Found on Page 45

  9. Question: The following questions refer to the circuit shown in Figure 18.114, consisting of two flashlight batteries and two Nichrome wires of different lengths and different thicknesses as shown (corresponding roughly to your own thick and thin Nichrome wir

    Found on Page 45

  10. Question: The following questions refer to the circuit shown in Figure 18.114, consisting of two flashlight batteries and two Nichrome wires of different lengths and different thicknesses as shown (corresponding roughly to your own thick and thin Nichrome wires).

    Found on Page 45

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