The answer is Average speed is equal to 12.5 m/sec
Explanation:
1- The average speed is the relationship between the distance traveled that a body made and the total time it took to perform it.
2- The formula that allows to calculate the average velocity is V = ΔX/ΔT where (V) is the average speed, (ΔX) is the distance traveled and (ΔT) is the time interval.
3- Knowing this we can replace the values given in the problem:
To find average speed, we divide the distance of travel (in this case, 400 metres) by the time she took, 32 seconds. Therefore: 12.5 seconds is her average speed.
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