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A cyclist travels a certain distance with a speed of 15km/h and returns with a speed of 10km/h. calculate the average speed of the whole journey i will mark as brainliest if answer first |
Answer» _________________________
To find:
Solution: Using the formula Average speed = 2V1V2/(V1 + V2) Where
Note : This information is only for this question → Avg speed = 2(15)(10)/15 + 10 → Avg speed = 300/25 → Average speed = 12 km/h Hence , average speed = 12 km/h _________________________★ Knowledge enhancer : 1st kinematic equation : v = u + at 2nd kinematic equation : s = ut + 1/2 at² 3rd kinematic equation : v² - u² = 2as _________________________ |
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