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A toy car is moving along a straight track. Its motion is restricted to the + distance axis. For the situations described below, choose the letter of any correct acceleration vs. time graphs that could correspond to the motion described. If you think that none is correct, answer N. You may use a graph more than once.

- The car speeds up at a steady rate, moving away from the origin.
- The car slows down at a steady rate, moving away from the origin.
- The car moves at a constant speed toward the origin.
- The car speeds up at a steady rate, moving toward the origin.

* Based on a problem from the FMCE (R. Thornton and D. Sokoloff) but presented in a multiple-choice multiple-response option format.

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Page last modified October 19, 2002: K08