Newtons law help?

11. One Newton is the amount of force required to give a 1-kg mass an acceleration of:


A. 1 m/s/s


B. 2 m/s/s


C. 10 m/s/s


D. 1/2 m/s/s


12. A 50 kg rock rests on the earth. If you take this rock to the moon, its mass will be:


A. 0 kg


B. 50 kg


C. 100 kg


D. 500 kg


13. A 50 kg rock rests on the earth's surface. Its weight on earth is about:


A. 50 N


B. 100 N


C. 200 N


D. 500 N


14. The weight of an object is the force of _________ acting upon that object.


A. tension


B. mass


C. friction


D. gravity


15. A force is a quantity which is measured using a standard metric unit known as the :


A. meter


B. Newton


C. meter/second/second


D. kilogram


16. How many forces act on a book that is resting on a table?


A. 1


B. 2


C. 3


D. 4


17. A force is:


A. a push or a pull


B. an interaction between teo objects


C. vector qunatity


D. all of these


18. An object has a 400 N force pulling upward on it, while a 150 N force acts on it to pull it down. What is th net force acting on the object?


A. 400 N upward


B. 250 N upward


C. 150 downward


D. 250 downward


19. An example of a contact force is:


A. an electrical force


B. a magnetic force


C. a frictional force


D. a gravitational force


20. What is the net force acting on a 25 kg brick while it is at rest on a table?


A. 0 N


B. 12.5 N


C. 25 N


D. 250 N

Newtons law help?
11. A


12. B


13. D


14. D


15. B


16. B


17. D


18. B


19. C


20. A
Reply:11. a


12. b


13. d


14. d


15. b


16. d


17. d


18. b


19. c


20. a

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