previous | 9 of 16next A sled of mass m is being pulled horizontally by a consta
ID: 1369641 • Letter: P
Question
previous | 9 of 16next A sled of mass m is being pulled horizontally by a constant horizontal force of magnitude F. The coefficient of kinetic friction is During the time interval t, the sled moves a distance s, starting from rest. Part A Find the work W done by the force F Express your answer in terms of the given quantities and, if necessary, appropriate constants You may or may not use all of the given quantities (F, m, , t, s). My A Correct Note that all you have to do is to apgly the definition of work most of the quantities given in the problem are irrelevant. Part B orce Find the press your answer in terms of the given quantities and, if necessary, appropriate constants. You may or may not use all of the given quantities (F, m,k, t, s).
Explanation / Answer
A) Work done = F.d
when force is constant for displacement d.
W = Fs
B) average power = total work done over time interval t / time interval t
<P> = W /t = Fs /t
c) average vvelocity = total displacement / time interval
<v> = s/t
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