Average Speed Homework: Answer Check

[joe215]

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.

 

[crazy_nuttie]

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