Answer Happy

A Fedex truck is traveling (on level ground) around a circular rotary which has a radius of 100 m. At a certain instant of time, the truck is traveling at a speed of 6.00 m/s and slowing down at a rate of 0.800 m. 20. Which of the following figures shows the approximate direction of the truck's overall acceleration? The figures show the rotary as seen from above. A) B) D) 21. The truck's overall acceleration has a magnitude of A. 0.360 m/ 8. 0.877 m 22. General TRUE or FALSE question: At a certain instant of time, an object is observed to be at rest. At that instant, the resultant force acting on the object is surely zero? A. TRUE. 8. FALSE. 23. General TRUE or FALSE question: A big refrigerator is at rest on your kitchen floor. You exert a horizontal force on the refrigerator in an effort to move it. You will not be able to move the refrigerator if the refrigerator pushes back on you as strongly as you push on it? A. TRUE. 8. FALSE. In the Prudential Tower, a physics student stands on a bathroom scale while taking the elevator downwards. At a certain instant of time, the elevator and the student are moving downwards at a speed of 2.00 m/s, and speeding up at a rate of 1.00 m At that instant of time, the scale reading is 660 N. 24. The mass of the student is equal to A. 67.3 kg. 61.1kg C. 75.0kg D. 55.9 kg. E. 84.6 kg. 25. The resultant force acting on the student is equal to A. 55.9 N up. 8.61.1 N down c. 0.770 m C. 84.6 Nup. D. 100 m قع D. 67.3 N down E. 0800 / m E. 75.0 N down.