Consider the following three car motions: A

PHYSICS · Subjective · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

Consider the following three car motions: A. Speeds up in a straight line from 10 m/s10\,\text{m/s} to 20 m/s20\,\text{m/s} in 4.0 s4.0\,\text{s}. B. Travels at a constant 15 m/s15\,\text{m/s} around a circular path of radius 30 m30\,\text{m}. C. Slows down in a straight line from 20 m/s20\,\text{m/s} to 10 m/s10\,\text{m/s} in 4.0 s4.0\,\text{s}. Rank the magnitude of the acceleration for motions A, B, and C from greatest to least, using “>” for greater than and “=” for equal, and explain your ranking in one brief sentence.

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