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| 1. |
A car travels from a point A to B point at constant speed of 50km/h .on return journey along the same paths, it travels at a constant speed 40km find it's distance travelled displacement and average speed |
| Answer» TION:v1= d/t1 d1 = d2t1= d/v1 v1=50t2=d/V2. V2=40avg v. = total distance/total timeavg v.= 2D / (d/v1) + (d/v2) = 2d × v1v2 /dv1 + dv2 = 2 × v1v2/v1 + v2 = 2×50×40 / 50 + 40 = 4000/9. avg. SPEED =44.44displacement = 0 | |