The radius of the wheel of a vehicle is 70 cm. The wheel makes 10 revolutionsin 5 seconds. The speed of the vehicle is-
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circumference of wheel=2* (22/7)* 70
= 440cm
total distance travelled in 10 revolutions
= 440*10
= 44m
speed =distance/time
= 44/5
= 8.8m/s
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