A 2.0-kg block slides on a rough horizontal surface. A force (P = 6.0 N) is applied to the block as shown. The magnitude of the block's acceleration is 1.2 m/s2. What is the magnitude of the force of friction acting on the block?
A. 2.0 N
B. 1.4 N
C. 1.6 N
D. 2.8 N
E. 3.4 N
Answer: D
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A. is greater than the force on the diver by Earth B. is less than the force on the diver by Earth C. is equal to the force on the diver by Earth D. There is no upward force by the diver on Earth. E. There is insufficient information to determine the gravitational pull on Earth by the diver.
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A. fission. B. nucleosynthesis. C. photodisintegration. D. neutronization.
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a. 1 calorie. b. 100 calories. c. 1000 calories. d. none of the above.
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