A 4.20-kg box has an acceleration of 2.10 m/s2 when it is pulled by a horizontal force across a surface with Hk = 0.420. Find the work done over a distance of 9.0 cm by the horizontal force. 2.35 J You are correct. Previous Tries Your receipt no. is 158-7850 ? Find the work done by the frictional force. -1.56 J You are correct. Previous Tries Your receipt no. is 158-887 0 Find the work done by the net force. 0.794 J You are correct. Previous Tries Your receipt no. is 158-5716 ? What is the change in kinetic energy of the box? 1.584 J Submit Answer Incorrect. Tries 2/10 Previous Tries

A 4.20-kg box has an acceleration of 2.10 m/s2 when it is pulled by a horizontal force across a surface with Hk = 0.420. Find the work done over a distance of 9.0 cm by the horizontal force. 2.35 J You are correct. Previous Tries Your receipt no. is 158-7850 ? Find the work done by the frictional force. -1.56 J You are correct. Previous Tries Your receipt no. is 158-887 0 Find the work done by the net force. 0.794 J You are correct. Previous Tries Your receipt no. is 158-5716 ? What is the change in kinetic energy of the box? 1.584 J Submit Answer Incorrect. Tries 2/10 Previous Tries

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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스크린샷 2022-03-30 오후 12.01.27 An external force F moves a 2.50-kg box at a constant speed v up a frictionless ramp, as shown in the figure. The force acts in a direction parallel to the ramp. 5.00 m -03. Calculate the work W done on the box by this force as it is pushed up the 5.00-m ramp to a height h = 3.00 m. 十 스크 -03. W = 스크로 -0. How does the work done on the box compare to the change in gravitational potential energy AU, that the grav box undergoes as it rises to its final height? O W > AUgrav W < AU grav O W = AU grav
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DIRECTION: CHOOSE THE CORRECT ANSWER F 1.A force of 5i+j+ 2k N displaced a body from a position of i+j+km to 2i +4j+ 6k m. How much work is done to displace it through this position? (A)18J (B)6J (C)12J (D)0J 2.Calculate the work done when a force of 2i+5j+ 5k N acts on a body when it produces a displacement of 2i + 4j+ 6k m. (A)54J (B)24J (C)50J (D)18J 3. A body of mass 10 kg at rest is acted upon simultaneously by two forces 4 N and 3 N at right angles to each other. The kinetic energy of the body at the end of 10 sec is (A)100 J (B) 300 J (D) 125 J 4) Consider an 80 kg man and 320 kg horse both running along a road with the same kinetic energy. (C)50 J The man must run (A) with the same speed as the horse. (CSS) 4 times as fast as the horse. (B) twice as fast as the horse. (D) 16 times as fast as the horse. 5)particle A is travelling at a velocity of []m/s. It collides with particle B which has a velocity of Jm/s. The particle move together. The mass of particle A is 2kg and the…
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