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Find the speed and direction of the 4kg

Find the speed and direction of the 4kg

College Physics
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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x(m) (A)25J (B)20J (C)5J (D)10J Figure -1 11)_ piece moves East at 4m/s and the 6kg piece moves South at 2m/s. Find the speed and direction of the 4kg piece. A 12kg object, originally at rest, suddenly explodes in to three masses : 2kg, 4kg, and 6kg. The 2kg (A)V3 = 3.6m/s & 56° above the x – axis (B)V3 =3.6m/s &116° above the x - axis. 12) At certain instant, a particle experience a force F = (5i +6j + 2k) N while having a velocity v = (2i -3k)m/s. What is the instantaneous rate at which the force does work on the particle? (C)V3 =3.6m/s & 26° above the x – axis. (D)None of the above (A)4W (B)50W (C)13W. (D) 10W. _13) A worker pushes a wheelbarrow with a horizontal force of 50 N on level ground over a distance of 5m. If a friction force of 43 N acts on the wheelbarrow in a direction opposite that of the worker, what net work is done on the wheelbarrow by the worker? (A) 35 J (B)215 J (C) 250 J (D) 10 J By Yishak Paulos Date of Submission : 26/08/2013E.C
Transcribed Image Text:x(m) (A)25J (B)20J (C)5J (D)10J Figure -1 11)_ piece moves East at 4m/s and the 6kg piece moves South at 2m/s. Find the speed and direction of the 4kg piece. A 12kg object, originally at rest, suddenly explodes in to three masses : 2kg, 4kg, and 6kg. The 2kg (A)V3 = 3.6m/s & 56° above the x – axis (B)V3 =3.6m/s &116° above the x - axis. 12) At certain instant, a particle experience a force F = (5i +6j + 2k) N while having a velocity v = (2i -3k)m/s. What is the instantaneous rate at which the force does work on the particle? (C)V3 =3.6m/s & 26° above the x – axis. (D)None of the above (A)4W (B)50W (C)13W. (D) 10W. _13) A worker pushes a wheelbarrow with a horizontal force of 50 N on level ground over a distance of 5m. If a friction force of 43 N acts on the wheelbarrow in a direction opposite that of the worker, what net work is done on the wheelbarrow by the worker? (A) 35 J (B)215 J (C) 250 J (D) 10 J By Yishak Paulos Date of Submission : 26/08/2013E.C
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