阿摩線上測驗
1. A particle moves in a track and its speed are recorded and plotted in
the figure. Which statement is correct?
(A) It is stationary from t=0.0 to t=0.5 second.
(B) It has maximum acceleration at t=1.5 seconds.
(C) No external force acting on the particle at t＞2.5 seconds.
(D) The maximum force received by this particle is at t=1.5 seconds.
(E) This particle received a constant force against its motion during 1.0 to 2.0 seconds.
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統計： A(0), B(1), C(4), D(0), E(0) #3429520
統計： A(0), B(1), C(4), D(0), E(0) #3429520
