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| 1. |
A body completes 2 rounds on a circular track of radius 7m in 10 seconds . calculate: a. distance covered. b. speed (take pie=22/7) |
| Answer» TION:Distance covered by the body = Circumference of the circle.We know circumference of the circle is 2πr We have, r = 7m Taking π = 22/7 Circumference is :- = 2 × 22/7 × 7= 44mSince, It covered 2 ROUNDS Total distance = 44 × 2 = 88 So the body completes 88M in 10sThen, Speed = 88 ÷ 10= 8.8m/s | |