Physics Questions & Answers

Physics Questions & Answers 1. The property of an object at rest to remain at rest is known as A. inertness. B. inertia. C. resistance. D. sluggishness. - CORRECT ANSWER- B 10. A small block sits on a horizontal table. In one experiment, a student pushes with a horizontal force of 5 N, but the block does not move. In a second experiment, the student pushes with a horizontal force of 8 N, but the block still does not move. The magnitude of the friction force exerted on the block is A. greater in the first experiment B. greater in the second experiment C. the same in the two experiments - CORRECT ANSWER- B 11. A small block sits on a horizontal table. In one experiment, a student pushes with a horizontal force of 5 N, but the block does not move. In a second experiment, the student glues sandpaper to the base of the block, and once again pushes with a horizontal force of 5 N. The block does not move. The magnitude of the friction force exerted on the block is A. greater in the first experiment B. greater in the second experiment C. the same in the two experiments - CORRECT ANSWER- C 12. A rectangular block sits on a horizontal table. In one experiment, a student pushes with a horizontal force of 5 N, but the block does not move. In a second experiment, the student tilts the block up so that it is resting on its narrow end, and once again pushes with a horizontal force of 5 N. The block still does not move. The magnitude of the friction force exerted on the block is A. greater in the first experiment B. greater in the second experiment C. the same in the two experiments - CORRECT ANSWER- C 13. In a tug-of-war, two teams pull in opposite directions on a large box. Team 1 pulls with a force of 220 N, while Team 2 pulls with a force of 190 N. The friction force exerted on the box is A. 30 N in the same direction as Team 1's pull. B. 30 N in the same direction as Team 2's pull. C. There are two friction forces, 220 N opposing Team 1's pull and 190 N opposing Team 2's pull. D. The friction force is zero,the box does not move because of its inertia. - CORRECT ANSWER- B 14. There are three forces acting on an object: 6 N to the left, 5 N to the right, and 3 N to the left. What is the net force acting on the object? A. 4 N B. 4 N left C. 4 N right D. 6 N left - CORRECT ANSWER- B 15. A woman pulls on one end of a