Question 699556
Average speed is always: ( total distance traveled ) / ( time elapsed )
The time for the walk is {{{ 150 + 30 + 140 = 320 }}} s
The distance traveled is {{{ 160 + 210 = 370 }}} m
( total distance traveled ) / ( time elapsed ) = {{{ 370 / 320 = 1.156 }}} m/s