[ Motion problems ]

A tourist walked for 3.5 hours, and for each one-hour interval, he walked exactly 5 km. Does it follow from this that his average speed was 5 km/h?

#
Let him follow such a schedule: transitions of half an hour at a speed of 10 km/h and breaks of half an hour. Then in 3.5 hours, he will have walked 20 km, and his average speed will be $20: 3.5=5 \frac{5}{7}$ km/h.

## Answer

Not advisable.