Question

A mam walk at 1m/sec for 60minHe takes rest for 20min and then walk at a speed of 1m/sec for 60min Find its average speed​

Answer 1

Answer:

Explanation:

Total Distance = 1 × 3600 + 1 × 3600

                            = 7200 metersTotal Time = 120 x 60 + 20 x 60 minutes

Average Speed = Total Distance / Total Time                              = 7200/8400                              = 6/7 m/s

this is the required Average Speed

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Answer 2

Answer:

Average Speed is 6/7 m/s

Explanation:

Total Distance = 1 × 3600 + 1 × 3600

                            = 7200 meters

Total Time = 120 x 60 + 20 x 60 minutes

= 140 x 60

= 8400 minutes

Average Speed

= T Distance / T Time                 

= 7200/8400                             

= 6/7 m/s