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試卷名稱：106年 - 學士後西醫物理及化學106物理#77053
年份：106年
科目：學士後西醫物理及化學
58. The position of a particle moving on x-axis is given by x =
, with x in meters and t in seconds. Which statement in the following is correct?
(A) The particle is moving in the positive direction of x with a speed of 1.5m/s at t =1.0 s.
(B) The acceleration of the particle at t = 1.0 s is -0.50 m / s 2 .
(C) The acceleration of the particle is constant.
(D) The particle is moving in the negative direction of x with a speed of 0.50m/s at t =1.0 s.
(E) The velocity of the particle is constant.