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Physics, 13.10.2020 22:01 lucy143

HEL A rock at rest has weight 138 N. What is the weight of the rock when it is accelerating upward at 12 m/s2? A. 115 B. 138 C. 63 D. 304

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HEL A rock at rest has weight 138 N. What is the weight of the rock when it is accelerating upward...
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