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| 1. |
car travels a distance s km on a straight roadin two hours and then returns to the starting pointin the next three hours. Its average speed in fourhours (in km/h)5s(2) 12(1)2S(4) Zero(†extsterling) |
| Answer» car travels a distance s km on a straight roadin two hours and then returns to the starting pointin the next three hours. Its average speed in fourhours (in km/h)5s(2) 12(1)2S(4) Zero(†extsterling) | |