Average Speed Homework: Answer Check

AI Thread Summary
To find the average speed, the total distance covered must be calculated first. Walking for 1 minute at 1.5 m/s results in a distance of 90 meters, and walking for 1 minute at 4 m/s results in 240 meters, totaling 330 meters. The total time is 2 minutes or 120 seconds. The average speed is then calculated as total distance divided by total time, resulting in an average speed of 2.75 m/s, not 0.0459 m/s. The initial calculation of average speed was incorrect due to a misunderstanding of how to combine speeds and distances.
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Homework Statement


You walk for 1 min. at a speed of 1.5 m/s and then for 1 min at 4 m/s in a straight line. What is your average speed?


The Attempt at a Solution



(1.5 m/s + 4 m/s) / 2= 2.75 m/s

Am I right? This is a very simple problem but I just want to double check myself.
 
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You would have to convert the minutes to seconds, so convert the 2 minutes into seconds and you get 120 seconds.

Then you divide 5.5m/s by 120 s and get 0.0459 m/s
 

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