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Iera K.

asked • 04/19/15

A particle moves in a straight line from its initial position so that after t seconds, it distance is given by s = t^2 + t feet from its initial position.

(a) Find the average velocity of the particle over the interval [1; 3] seconds.
(b) Find the instantaneous velocity of the particle at t = 1 second.

1 Expert Answer


Philip P. answered • 04/19/15

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Michael J.

The derivative of s should be
ds/dt [t2 + t] = 2t + 1


Philip P.

Right you are.  Thanks for the comment.  I've corrected my answer.


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