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# Ch04 - Chapter 4 The Laws of Motion CHAPTER 4 1 A 7.0-kg...

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Chapter 4, The Laws of Motion C HAPTER 4 1. A 7.0-kg bowling ball experiences a net force of 5.0 N. What will be its acceleration? a. 35 m/s 2 b. 7.0 m/s 2 c. 5.0 m/s 2 d. 0.71 m/s 2 5. Two ropes are attached to a 40-kg object. The first rope applies a force of 25 N and the second, 40 N. If the two ropes are perpendicular to each other, what is the resultant acceleration of the object? 6. Acceleration due to gravity on the Moon’s surface is 1/6th that on Earth. An astronaut’s life support backpack weighs 300 lb on Earth. What does it weigh on the Moon? 9. If we know that a nonzero net force is acting on an object, which of the following must we assume regarding the object’s condition? The object is: 10. If we know an object is moving at constant velocity, we may assume: a. The net force acting on the object is zero. b. There are no forces acting on the object. c. The object is accelerating. d. The object is losing mass. 31

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Chapter 4, The Laws of Motion 13. A 2 000-kg sailboat experiences an eastward force of 3 000 N by the ocean tide and a wind force against its sails with magnitude of 6 000 N directed toward the northwest (45 ° N of W). What is the magnitude of the resultant acceleration?
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