A particle is moving with a constant acceleration of 4.0 m/s2. Its speed at t = 1.0 s is 4.0 m/s and at t = 3.0 s it is 12.0 m/s. What is the area under the position-time graph for the interval from t = 1.0 s to t = 3.0 s?
A. 8.0 m/s
B. 8.0 m
C. 12 m
D. 16 m
E. 16 m/s2
Answer: D
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