8. The forces in FIGURE EX6.80 act on a 2.0 kg object. What are the values of a, and ay, the x- and y-components of the object's acceleration? FIGURE EX6.8 3.0 N! 4.0 N 3.0 N 2.0 N
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- a. What is the mass of a book that weighs 3.2 N at a point where g = 9.80 m/ s2? b.At the same location, what is the weightof a dog whose mass is 14.0 Kg ?OET=ma An astronaut weighs 99 N on the Moon, where the acceleration of gravity is 1.62 m/s2. How much does she weigh on Earth? (Knowing that the gravity acceleration o Earth is 9.8 m/s2.) OA 99 N QUESTION 8 O B. 61 N OG 440 N O D. 16 N O E. 599 N QUESTION 9 elevator suspended by a vertical cable is moving downward but slowing down. The magnitude of tension in the cable must be A greater than the magnitude of the weight of the elevator. B. less than than the magnitude of the weight of the elevator. re and Submit to save and submit. Click Save All Answers to save all answers. here to search 近A 5.0 kg dog sits on the floor of an elevator that is accelerating downward at 1.20 m/s2.a. What is the magnitude of the normal force of the elevator floor on the dog?A. 34 N B. 43 N C. 49 N D. 55 N E. 74 Nb. What is the magnitude of the force of the dog on the elevator floor?A. 4.2 N B. 49 N C. 55 N D. 43 N E. 74 N
- A 2.0-kg block slides on a rough horizontal surface. A force (magnitude P = 4.0 N) acting parallel to the surface is applied to the block. The magnitude of the block's acceleration is 1.2 m/s 2. If P is increased to 5.0 N, determine the magnitude of the block's acceleration. O a. 2.1 m/s2 O b.2.3 m/s? O . 1.7 m/s? O d. 1.9 m/s? O e 3.2 m/s?While standing in a low tunnel, you raise your arms and push against the ceiling with a force of 100 N. Your mass is 70 kg. a. What force does the ceiling exert on you? A. 10 N B. 100 N C. 690 N D. 790 N E. 980 N b. What force does the floor exert on you? A. 10 N B. 100 N C. 690 N D. 790 N E. 980 NIf a net horizontal force of 132 N is applied to a person with mass 60 kg who is resting on the edge of a swimming pool, what horizontal acceleration is produced? A A. 7920 m/s^2 (в) в. 29.20 m/s2 C. 2.2 m/s^2 D. D. 22.2 m/s^2 E E. No answer
- 13. 54-kg box is sitting on the floor of a level railroad car which is moving forward with a speed of 25 m/s and accelerating at a rate of 5.6 m/s2. What is the strength, in Newtons, of the frictional force acting on the box if it does not slide on the floor? O A. 0 O B. 25 N O C. 54 N O D. 248 N O E. 255 N O F. 302 N O G. 520N O H. 1350 N Back Save & Continue 2020 BYU 99+Two blocks are attached by massless strings and accelerated to the right on a frictionless horizontal surface by TB. The masses are m1 = 2.0 kg and m2 = 3.0 kg. The acceleration of the block 1 is 5.0 m/s2. Match the answers with questions. m1 TA TB m2 v What is TA? A. 25 N v What is TR? В. 15 N C. 1.0 N D. 2,5 N E. 10 NA 20,000 kg rocket has a rocket motor that generates 3.0 x 105 N of thrust.a. What is the rocket’s initial upward acceleration?b. At an altitude of 5.0 km the rocket’s acceleration hasincreased to 6.0 m/s2. What mass of fuel has it burned?
- Two blocks are attached by massless strings and accelerated to the right on a frictionless horizontal surface by TB. The masses are m1 = 2.0 kg and m2 = 3.0 kg. The acceleration of the block 1 is 5.0 m/s². Match the answers with questions. TA TB m1 m2 + What is TA? + What is TB? A. 2.5 N B. 1.0 N C. 25 N D. 10 N E. 15 NA woman has a mass of 55.0 kg.a. What is her weight on earth?b. What are her mass and her weight on the moon, where g = 1.62 m/s2?A crate (100 kg) is in an elevator traveling downwards and slowing down at 6 m/s. Find the normal force exerted on the %3D crate by the elevator. Assume g = 10 m/s2. A. 1600 N B. 400 N C. 1000 N D. 400 N E. 600 N