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3. A car is traveling at 20 m/s on a horizontal road. The brakes are applied and the car skids to a stop in 4 s. (a) The coefficient of kinetic friction between the tires and road is: (b) The magnitude of the acceleration of the car is

3. A car is traveling at 20 m/s on a horizontal road. The brakes are applied and the car skids to a stop in 4 s. (a) The coefficient of kinetic friction between the tires and road is: (b) The magnitude of the acceleration of the car is

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Fill in the blanks with correct answers. Only the correct answers count. Keep 2 digits after the decimal point when rounding numerical values. 1. Two forces are applied to a 5 kg object, one is 6 N to the north and the other is 8 N to the west. (a) The magnitude of the total force is. the acceleration of the object is (b) The magnitude of 2. A 32 N force, parallel to the incline, is required to push a certain crate at constant velocity up a frictionless incline that is 30° above the horizontal. (a) The mass of the crate is (b) The acceleration of the crate is 3. A car is traveling at 20 m/s on a horizontal road. The brakes are applied and the car skids to a stop in 4 s. (a) The coefficient of kinetic friction between the tires and road is: (b) The magnitude of the acceleration of the car is 4. An object of mass 2 kg starts from rest and slides down an inclined plane 80 cm long in 0.5 s. (a) The acceleration of the object down the incline is force acting on the object along the incline is (b) The net 5. An object weights 40 N on the earth's surface. (a) The weight of the object on a planet that has one tenth the earth's mass and one half the earth's radius is _ (b) The mass of the object at one earth's radius above earth's surface is 6. The initial speed of a particle with mass m=10 kg is 12 m/s as it travels on a horizontal road. (a) The work required to stop the particle in 10 s is displacement of the particle is (b) The 7. A skier of mass, m=100 kg leaves the top of a slope with an initial speed of 5 m/s. Her speed at the bottom of the slope is 13 m/s. (a) The height of the slope is (b) The initial gravitational potential energy of the skier is
Transcribed Image Text:Fill in the blanks with correct answers. Only the correct answers count. Keep 2 digits after the decimal point when rounding numerical values. 1. Two forces are applied to a 5 kg object, one is 6 N to the north and the other is 8 N to the west. (a) The magnitude of the total force is. the acceleration of the object is (b) The magnitude of 2. A 32 N force, parallel to the incline, is required to push a certain crate at constant velocity up a frictionless incline that is 30° above the horizontal. (a) The mass of the crate is (b) The acceleration of the crate is 3. A car is traveling at 20 m/s on a horizontal road. The brakes are applied and the car skids to a stop in 4 s. (a) The coefficient of kinetic friction between the tires and road is: (b) The magnitude of the acceleration of the car is 4. An object of mass 2 kg starts from rest and slides down an inclined plane 80 cm long in 0.5 s. (a) The acceleration of the object down the incline is force acting on the object along the incline is (b) The net 5. An object weights 40 N on the earth's surface. (a) The weight of the object on a planet that has one tenth the earth's mass and one half the earth's radius is _ (b) The mass of the object at one earth's radius above earth's surface is 6. The initial speed of a particle with mass m=10 kg is 12 m/s as it travels on a horizontal road. (a) The work required to stop the particle in 10 s is displacement of the particle is (b) The 7. A skier of mass, m=100 kg leaves the top of a slope with an initial speed of 5 m/s. Her speed at the bottom of the slope is 13 m/s. (a) The height of the slope is (b) The initial gravitational potential energy of the skier is
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