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Answer me plssss ..... |
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Answer» 1. Average speed = Total distance / Total time TAKEN = S1 + S2/t1 + t2
S1 = 10km = 10*1000 = 10000m S2 = 10km = 10000m t1 = 20min t2 = 30 min = 30*60 = 1800sec Average speed = 10000 + 10000/1200 + 1800 =20000/3000 = 6.67m/s 2. we can use the formula 2xy/x + y so, 2 x 20 x 30/ 20 + 30 12000 / 50 = 240 km/hr |
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