When there is no net force acting on an object, it is either at rest or it moves with constant velocity. This is Newton's: A. Law of Acceleration C. Law of Inertia B. Law of Interaction D. None of the above 18. An astronaut weighs 588 N on the earth. What is the astronaut's mass on moon? A. 0 kg. C. 80 kg. B. 60 kg. D. cannot be determined
17. When there is no net force acting on an object, it is either at rest or it moves with constant
velocity. This is Newton's:
A. Law of Acceleration C. Law of Inertia
B. Law of Interaction D. None of the above
18. An astronaut weighs 588 N on the earth. What is the astronaut's mass on moon?
A. 0 kg. C. 80 kg.
B. 60 kg. D. cannot be determined
19. Which of the following situations applies
A. The gun recoils into your shoulder after firing
B. Pushing a truck and a car with the same driving force, the car accelerates faster
C. A marathon runner is not able to stop himself after crossing the finish line
D. The bus driver abruptly brakes, pushing the passengers in the forward direction
20. An interaction between two objects or between an object and its environment
A. Mass C. Acceleration
B. Position Vector D. Force
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