Wednesday, February 22, 2012

(Online calculus course test homework solutions)

Question:
An object is moving in a straight line with constant velocity 14 m/s. The object then speeds up, with constant acceleration, until it reaches 29 m/s. During the acceleration phase, the object covers a distance of 321 m. To 2 decimal places, what is the magnitude of the acceleration in m/s^2.

Solution:
We can use the following equation:
 
Where a=acceleration and s=distance.
Thus:

or a=1 to 2 decimal places.

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