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4. A train travels due south at 60 m/s. It reverses its direction and travels due north at 60 m/s. What is the change in velocity of the train? a) 60 m/s, due south b) zero m/s c) 120 m/s, due south d) 60 m/s, due north e) 120 m/s, due north

4. A train travels due south at 60 m/s. It reverses its direction and travels due north at 60 m/s. What is the change in velocity of the train? a) 60 m/s, due south b) zero m/s c) 120 m/s, due south d) 60 m/s, due north e) 120 m/s, due north

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4. A train travels due south at 60 m/s. It reverses its direction and travels due north at 60 m/s. What is the change in velocity of the train? a) 60 m/s, due south b) zero m/s c) 120 m/s, due south d) 60 m/s, due north e) 120 m/s, due north 5. In which one of the following situations can the equations of kinematics not be used? a) when the velocity changes from moment to moment b) when the acceleration remains constant c) when the acceleration changes from moment to moment d) when the velocity remains constant
Transcribed Image Text:4. A train travels due south at 60 m/s. It reverses its direction and travels due north at 60 m/s. What is the change in velocity of the train? a) 60 m/s, due south b) zero m/s c) 120 m/s, due south d) 60 m/s, due north e) 120 m/s, due north 5. In which one of the following situations can the equations of kinematics not be used? a) when the velocity changes from moment to moment b) when the acceleration remains constant c) when the acceleration changes from moment to moment d) when the velocity remains constant
6. Which one of the following statements concerning the two "gravitational constants" G, the universal gravitational constant, and g the magnitude of the acceleration due to gravity is true? a) The value of G is the same everywhere in the universe, but the value of g is not. b) The values of g and G are equal on the surface of any planet, but in general, G varies with location in the universe. c) The values of g and G do not depend on location. d) The value of g is the same everywhere in the universe, but the value of G is not. e) The values of g and G depend on location. 7. Which one of the following expressions is equal to the Work Done by a Constant Force on an object? a) ma b) myt c) mgh d) F.s cose 1 e) mv2
Transcribed Image Text:6. Which one of the following statements concerning the two "gravitational constants" G, the universal gravitational constant, and g the magnitude of the acceleration due to gravity is true? a) The value of G is the same everywhere in the universe, but the value of g is not. b) The values of g and G are equal on the surface of any planet, but in general, G varies with location in the universe. c) The values of g and G do not depend on location. d) The value of g is the same everywhere in the universe, but the value of G is not. e) The values of g and G depend on location. 7. Which one of the following expressions is equal to the Work Done by a Constant Force on an object? a) ma b) myt c) mgh d) F.s cose 1 e) mv2
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