The displacement (in meters) of a particle moving in a straight line is given by the equation of motion below, where t is measured in seconds. http://www.webassign.net/cgi-bin/symimage.cgi?expr=s%20%3D%207%2Ft%5E2 (a) Find the velocity of the particle at time t = a. m/s (b) Find the velocity of the particle at time t = 1. m/s (c) Find the velocity of the particle at time t = 2. m/s (d) Find the velocity of the particle at time t = 3. m/s

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The displacement (in meters) of a particle moving in a straight line is given by the equation of motion below, where t is measured in seconds. http://www.webassign.net/cgi-bin/symimage.cgi?expr=s%20%3D%207%2Ft%5E2 (a) Find the velocity of the particle at time t = a. m/s (b) Find the velocity of the particle at time t = 1. m/s (c) Find the velocity of the particle at time t = 2. m/s (d) Find the velocity of the particle at time t = 3. m/s

Mathematics
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Differentiate and put your values of t in.
velocity is ds/dt so differentiate your equation, then plug in values for t
the answer is d

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It's not multiple choice.
huh? this is not a multiple choice question
oh
Have you got it loco?
I'm having trouble figuring out how to do it.
u get better i tryed
\[v=\frac{ds}{dt}=\frac{d(7t^{-2})}{dt}=-14t^{-3}\]That's your function for velocity, now just plug in the values of t.
What would the value for a be then?
-14/a^3
The way you showed is really helpful.
Good, glad I helped.

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