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A `6.0kg` mass is moving to the right at `10 m//s`. A `0.25kg` mass is fired toward the left at the larger mass. What speed `(v)` must the smaller mass have to completely stop both masses? A. `4.2m//s`B. `15m//s`C. `150m//s`D. `240m//s` |
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Answer» Correct Answer - D Ans.(4) Momentum conservation `10xx6-25xxv=0` `v-240m//s` |
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