13. Two constant forces of magnitude F1 and F2 act on a particle of mass 5.00 kg which is at rest at the origin. The force F1 points at 14.5° west of north, while the force F2 points at 58.3° west of south. Due to the two forces, the particle accelerates and is later located at 32.4 m, 17.0° north of west with speed 12.2 m/s. What is F1? A. 10.7 N B. 0.524 N C. 9.28 N D. 9.03 N

13. Two constant forces of magnitude F1 and F2 act on a particle of mass 5.00 kg which is at rest at the origin. The force F1 points at 14.5° west of north, while the force F2 points at 58.3° west of south. Due to the two forces, the particle accelerates and is later located at 32.4 m, 17.0° north of west with speed 12.2 m/s. What is F1? A. 10.7 N B. 0.524 N C. 9.28 N D. 9.03 N

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 5P

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13. Two constant forces of magnitude F1 and F2 act on a particle of mass 5.00 kg which is at rest at the origin. The force F1 points at 14.5° west of north, while the force F2 points at 58.3° west of south. Due to the two forces, the particle accelerates and is later located at 32.4 m, 17.0° north of west with speed 12.2 m/s. What is F1? A. 10.7 N B. 0.524 N C. 9.28 N D. 9.03 N
300 lb 100 lb 45° 30 400 lb 200 1b Figure 2-5
Force, Force, Baby! Two constant forces of magnitudes F and F, act on a particle of mass 5.00 [kg] which is at rest at the origin. The force F1 points at 14.5° west of north, while the force F, points at 58.3° west of south. Due to the two forces, the particle accelerates and is later located at 32.4 [m], 17.0° north of west with speed 12.2 [m/s]. What is F1? O 0.524 [N] O 9.03 [N] O 9.28 [N] O 10.7 [N]
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45. Review. Two constant forces act on an object of mass m = QC 5.00 kg moving in the xy plane as shown in Figure P7.45. Force F, is 25.0 N at 35.0°, and force F, is 42.0 N at 150°. At time t = 0, the object is at the origin and has velocity (4.00i2.50j m/s. (a) Express the two forces in unit-vector other answers notation. Use unit-vector notation for your (b) Find the total force exerted on the object. (c) Find the object's acceleration. Now, considering the instant t = 3.00 s find (d) velocity, (e) its position (f) its kinetic energy from m and (g) its the object's kinetic from 1500 energy m .T. (h) What conclusion can you 35.00 draw x m by comparing the answers to parts (f) and (g)? Figure P7.45
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32. A 3.00-kg object is moving in a plane, with its x and y W coordinates given by x52-1 and3 2, where x and y are in meters and t is in seconds. Find the magnitude of the net force acting on this object at -2.00s
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