Answer
$7.38 \frac{m}{sec}$
Work Step by Step
As we know that $= \frac{total distance traveled}{total time taken}$
So from the given data $= \frac{1.5Km + 40Km + 10Km}{1 hour 56 minutes and 16 sec}$
converting into standard units we get,
$= \frac{1500m + 40000m + 10000m}{6976sec}$
Or $= \frac{51500m}{6976sec}$
solving we get, $= 7.38\frac{m}{sec}$
