32.Two identical balls strike normal to a wall with the same velocity respectively. Ball A bounces backwards at the same speed. Ball B stops. Which statement correctly describes the change in momentum of the two balls?
(A) |△pB|>|△pAl
(B) |△pB=|△pA|
(C) |△pBI <I△pAl
(D) △pB=△pA
(E) △pB>△pA
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統計: A(1), B(2), C(16), D(0), E(0) #3081272
統計: A(1), B(2), C(16), D(0), E(0) #3081272