A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm. Its position 7.0 s later is x = ?30 cm. What is the acceleration of the particle?
A. ?7.3 cm/s2
B. ?8.9 cm/s2
C. ?11 cm/s2
D. ?15 cm/s2
E. ?13 cm/s2
Answer: A
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Fill in the blank(s) with the appropriate word(s).
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