(a) At a certain instant, a particle-like object is acted on by a force F = (2.60 N) – (3.70 N) + (7.60 N) while the object's velocity is = - (2.70 m/s ) + (3.40 m/s) . What is the instantaneous rate at which the force does work on the object? (b) At some other time, the velocity consists of only a y component. If the force is unchanged, and the instantaneous power is -5.40 W, what is the velocity of the object just then? (Give your answer without a unit vector.) (a) Number (b) Number Units Units
(a) At a certain instant, a particle-like object is acted on by a force F = (2.60 N) – (3.70 N) + (7.60 N) while the object's velocity is = - (2.70 m/s ) + (3.40 m/s) . What is the instantaneous rate at which the force does work on the object? (b) At some other time, the velocity consists of only a y component. If the force is unchanged, and the instantaneous power is -5.40 W, what is the velocity of the object just then? (Give your answer without a unit vector.) (a) Number (b) Number Units Units
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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Transcribed Image Text:(a) At a certain instant, a particle-like object is acted on by a force F = (2.60 N) – (3.70 N) + (7.60 N)k while the object's
velocity is u (2.70 m/s) + (3.40 m/s) . What is the instantaneous rate at which the force does work on the object? (b) At
some other time, the velocity consists of only a y component. If the force is unchanged, and the instantaneous power is -5.40 W, what is
the velocity of the object just then? (Give your answer without a unit vector.)
(a) Number
(b) Number
Fo
Units
Units
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