A man walked 1.2 km in 25 minutes, then rested for half an hour, and then ran another 800 m in 5 minutes.
| December 14, 2020 | education
A man walked 1.2 km in 25 minutes, then rested for half an hour, and then ran another 800 m in 5 minutes. What was the average speed along the way?
Given:
t1-25min
t2-30min
t3-5min
S1-1.2km
S2-0
S3-800m
V-? Km / h
Decision:
Vav = Stot / ttot
Vav = (1.2km + 0 + 0.8km) / 25min + 30min + 5min = 2km / 1h = 2km / h
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
