1.Cart A, of mass m, starts from rest and travels in a straight line with acceleration a. It traverses a ance x in time t. Cart B, of mass 4m, starts from rest and travels in a straight Iine with acceleration a/2. At time t it has traversed the distance
(A) x/4
(B) x/2
(C) x
(D) 2x
(E) 4x

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統計: A(0), B(9), C(0), D(1), E(0) #3224647

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私人筆記#6342305
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(B) x/2

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