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 E. 255 N O F. 302 N O G. 520 N O H. 1350N

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 E. 255 N O F. 302 N O G. 520 N O H. 1350N

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter4: Dynamics: Force And Newton's Laws Of Motion

Section: Chapter Questions

Problem 7PE: (a) If the rocket sled shown in Figure 4.32 starts with only one rocket burning, what is the...

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