An object moves along a circular path of diameter 14 m with constant speed. If it takes 2 min to move from a point on the path to the diametrically opposite point, the speed is:
(a) 18.33 cm/sec (b) 11.67 cm/sec (c) 14 cm/sec (d) 22 cm/sec
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Answer:
11.67cm/s
Explanation:
1m=100cm
14m= 14*100
=1400cm
1min=60s
2min 120s
let us a circle
the distance travelled a object is equal to diameter of a circle
speed =distance/time
=1400/120
=11.6666666m/s
you know that after the point the 2nd digit is greater than 5 you get answer is 1plus than the original value
Answer is 11.67m/s
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