• Document: AP Physics 1 Forces Test Review
• Size: 328.39 KB
• Uploaded: 2019-02-13 16:55:52
• Status: Successfully converted

Some snippets from your converted document:

AP Physics 1 Forces Test Review 1. A 15-N net force is applied for 6.0 s to a 12-kg box initially at rest. What is the speed of the box at the end of the 6.0-s interval? A) 1.8 m/s B) 15 m/s C) 3.0 m/s D) 30 m/s E) 7.5 m/s 2. A 810-kg car accelerates from rest to 27 m/s in a distance of 120 m. What is the magnitude of the average net force acting on the car? A) 740 N B) 2500 N C) 91 N D) 1300 N E) 7900 N 3. The wheels of an automobile are locked as it slides to a stop from an initial speed of 30.0 m/s. If the coefficient of kinetic friction is 0.200 and the road is horizontal, approximately how long does it take the car to stop? A) 6.00 s B) 7.57 s C) 15.3 s D) 22.5 s E) 30.0 s 4. A 4-kg block is connected by means of a massless rope to a 2-kg block as shown in the figure. Complete the following statement: If the 4-kg block is to begin sliding, the coefficient of static friction between the 4-kg block and the surface must be A) less than zero. B) greater than 2. C) greater than 1, but less than 2. D) greater than 0.5, but less than 1. E) less than 0.5. 5. Which of the following statements about the tension in a rope is true? A) The tension force in the rope is larger closer to the applied force acting on the rope. B) The tension force in the rope is equal everywhere along the rope. C) The tension force in the rope is smaller closer to the applied force acting on the rope. D) There is no true tension force in the rope because the applied force balances whatever force is keeping the rope in place. AP Physics 1 Forces Test Review 6. A block is at rest on a rough inclined plane and is connected to an object with the same mass as shown. The rope may be considered massless; and the pulley may be considered frictionless. The coefficient of static friction between the block and the plane is µs; and the coefficient of kinetic friction is k. What is the magnitude of the static frictional force acting on the block? A) mg sin θ B) mg cos θ C) mg (1 - sin θ) D) mg (1 - cos θ) E) mg 7. A block of weight W is suspended by a string of fixed length. The ends of the string are held at various positions as shown in the figures below. In which case, if any, is magnitude of the tension along the string the largest? (a) Has the largest tension forces in the ropes . (e) It will be the same in all four cases, since the string must support the entire weight of the block. 8. A muscle builder holds the ends of two massless ropes. At the center of the ropes, a 15-kg ball is hung as shown. What is the tension in EACH of the ropes if the angle  in the drawing is 4.5°? A) 1900 N B) 940 N C) 470 N D) 230 N E) 150 N AP Physics 1 Forces Test Review 9. A block of mass M is held motionless on a frictionless inclined plane by means of a string attached to a vertical wall as shown in the drawing. Assume the plane is not frictionless and the string breaks, what minimum value of the coefficient of static fricton,s, would prevent the block from sliding down the inclined plane? A) zero B) 1 C) cos  D) sin  E) tan  10. A 2.0-kg object moves in a straight line on a horizontal frictionless surface. The graph shows the velocity of the object as a function of time. The various equal time intervals are labeled using Roman numerals: I, II, III, IV, and V. The net force on the object always acts along the line of motion of the object. In which section of the graph is the magnitude of the net force decreasing? A) I B) II C) III D) IV 11. Using the same graph as Which section of the graph corresponds to the application of the largest constant net force? A) I B) II C) III D) IV E) V AP Physics 1 Forces Test Review 12. A block is at rest on a horizontal surface when a vertical applied force is exerted upward on it. Which of the following statements is necessarily true about the box remaining at rest? A) The applied force is greater than the normal force. B) The normal force is zero. C) The applied force is less than the normal force. D) The applied force is the only upward force acting on the block. 13. A force P pulls on a crate of mass m on a rough surface. The figure shows the magnitudes and directions of the forces that act on the crate in this situation. W represents the weight of th

Recently converted files (publicly available):