Ch04 - Chapter 4 The Laws of Motion CHAPTER 4 1 A 7.0-kg bowling ball experiences a net force of 5.0 N What will be its acceleration a 35 m/s2 b

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
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? a. 1.2 m/s 2 b. 3.0 m/s 2 c. 25 m/s 2 d. 47 m/s 2 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? a. 1 800 lb b. 300 lb c. 135 lb d. 50 lb 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: a. at rest. b. moving with a constant velocity. c. being accelerated. d. losing mass. 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
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
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? a. 2.2 m/s 2 b. 2.1 m/s 2 c. 1.5 m/s 2 d. 3.0 m/s 2 15. A cart of weight 20 N is accelerated across a level surface at 0.15 m/s 2 . What net force acts on the wagon? ( g = 9.8 m/s 2 ) a. 0.92 N b. 0.31 N c. 3.0 N d. 4.5 N 17. Two blocks of masses 20 kg and 8 kg are connected together by a light string and rest on a frictionless level surface. Attached to the 8-kg mass is another light string, which a person
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/25/2008 for the course PHY 231C taught by Professor Pratt during the Spring '06 term at Michigan State University.

Page1 / 7

Ch04 - Chapter 4 The Laws of Motion CHAPTER 4 1 A 7.0-kg bowling ball experiences a net force of 5.0 N What will be its acceleration a 35 m/s2 b

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online