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43. A 1200 kg car is moving with a speed of (11i + 6.2j ) m/s. What is the magnitude of its momentum in kg m/s?
(A) 1.3 x 104
(B) 4.3 x 104
(C) 7.4 x 104
(D) 1.5 x 104


答案:D
難度: 困難

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43. A 1200 kg car is moving with a speed..-阿摩線上測驗