1. An m-mass body slides a distance of d along a horizontal surface. The work done by the force of gravity is: mgd a. b. Zero C. -mgd (mg sen@jd d. е. none of the above 2. Total work on a body is positive if: the resulting force has the same direction of displacement Theresulting force is perpendicular to displacement Theresulting force has opposite direction to displacement Theresulting force is zero the object does not move a. b. C. d. е. 3. The unit of kinetic energy can be expressed as: kem/s kgm/s m/(kgs) kgs 2/s'kgs a. b. C. d. e. 4. A 75.0 kg man dlimbs the stairs of a building until he reaches the fifth floor located at a height of 16.0 m from the first floor of the building. Your gravitational potential energy at this point relative to the first floor will be: a. 2.83 kl b. C. d. 1.18 kJ 11.8 kJ 3.82 kl е. none of the above A motor travels at a speed of25.0 m/s. If the mass of the motor and the conductor is 855 kg. the kinetic energy of the system (motor + conductor) shall be: 2.67 x 10 1.07 x 10 5.34 x 10° 2.67 x 10° 4.00 x 10 5. a. b. C. d. e. 6. A 5.00 kg case slides 3.00.00 m on a frictioniess surface of 30 degrees of inclination. The work done by gravitational force is: 147 a. b. It's7. 50J C. 73.5) d. 7.50J е. none of the above
1. An m-mass body slides a distance of d along a horizontal surface. The work done by the force of gravity is: mgd a. b. Zero C. -mgd (mg sen@jd d. е. none of the above 2. Total work on a body is positive if: the resulting force has the same direction of displacement Theresulting force is perpendicular to displacement Theresulting force has opposite direction to displacement Theresulting force is zero the object does not move a. b. C. d. е. 3. The unit of kinetic energy can be expressed as: kem/s kgm/s m/(kgs) kgs 2/s'kgs a. b. C. d. e. 4. A 75.0 kg man dlimbs the stairs of a building until he reaches the fifth floor located at a height of 16.0 m from the first floor of the building. Your gravitational potential energy at this point relative to the first floor will be: a. 2.83 kl b. C. d. 1.18 kJ 11.8 kJ 3.82 kl е. none of the above A motor travels at a speed of25.0 m/s. If the mass of the motor and the conductor is 855 kg. the kinetic energy of the system (motor + conductor) shall be: 2.67 x 10 1.07 x 10 5.34 x 10° 2.67 x 10° 4.00 x 10 5. a. b. C. d. e. 6. A 5.00 kg case slides 3.00.00 m on a frictioniess surface of 30 degrees of inclination. The work done by gravitational force is: 147 a. b. It's7. 50J C. 73.5) d. 7.50J е. none of the above
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter1: Units And Measurement
Section: Chapter Questions
Problem 88CP: The first atomic bomb was detonated on July 16, 1945, at the Trinity test site about 200 mi south of...
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9781938168277
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