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15 N. 5 N. 4.1 The Concepts of Force and Mass. Mass is a measure of the amount ... 275 N + 395 N – 560 N = +110 N ... If the mass of the car is 1850 kg then, by ... For two particles that have masses m1 and m2 and are ... N. Moreover, the water applies an opposing force R, whose magnitude is R = 40.0 × 103 N. The tanker ...

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