19. A change in the velocity of an object over time is __________.
(A)acceleration
(C)force (
(B)speed
(D)distance

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統計: A(25), B(15), C(6), D(1), E(0) #1342060

詳解 (共 1 筆)

#1672267
加速度即持續改變物體的速度
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