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CBSE Class 9 Answered

An object moves 9 m in first 3 sec, 11 m in next 3 sec, and 7 in last 3 sec. What is its average speed?
Asked by samtechner555 | 28 Sep, 2020, 07:58: AM
answered-by-expert Expert Answer
Average speed = Total distance travelled/ Total time taken 
Average speed = (9 + 11 + 7)/ (3+3+3) = 3 m/s 
The average speed of object is 3 m/s
Answered by Shiwani Sawant | 28 Sep, 2020, 12:48: PM

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