Question

A man walked for 1min at a speed of 1 m/a and then run for 1 min at speed of 3m/s along a straight track what is the avg speed of the man

Answer 1

average speed=v1+v2/2=(1+3)/2=4/2=2m/s

Answer 2

Average speed =v1 + v2/2m/s
=1+3/2m/s
=4/2m/s
=2m/s
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