Question

Q. 3 A man travelled 7 km 500m in the first hour, 5 km
685m in the second hour and 2 km 123m in the third hour.
How far did he travel in all?​

Answer 1

Answer:

Given: A man walks 7 km in 2 hrs

Later he walks 2 km in 1 hour

We need to find the average speed and average velocity

Solution:

We know that

Speed = Total distance / Total time

Total distance travelled by man = 7 km + 2 km = 9 km

Total time taken = 2 + 1 = 3 hrs

Average speed = 9/3 = 3 km/hour.

Velocity = Total displacement / Total time

Average velocity will be the same as average speed in this case since there is no direction change mentioned.

Therefore Total Displacement = Total Distance

average velocity = average speed = 3 km/hour.

Hence

Average speed = 3 km/hr.

Average velocity = 3 km/hr.

Step-by-step explanation:

please mark as brainlist

follow for more help