In a period of 3 h, a man walks 13 km north, turns around and walks 5 km south. Find his average velocity in km/h? Please pay attention to sign. (-) means the average velocity is to the south, (+) means the average velocity is to the North.
final displacement is 8 km in 3 hrs, so v = 8/3 km/hr North
His speed, on the other hand, is non-directional, so it is just distance covered = 18/3 = 6 km/hr
A person walk 13km/hr to the north, what is the person average velocity in km/hr & m/s
To find the average velocity, we need to calculate the total displacement and divide it by the total time taken.
First, let's calculate the total displacement. The man walks 13 km north and then turns around and walks 5 km south. The total displacement can be calculated by subtracting the distance traveled south from the distance traveled north:
Displacement = Distance north - Distance south
Displacement = 13 km - 5 km
Displacement = 8 km north
Next, let's calculate the total time taken. The man walked for 3 hours, so the total time taken is 3 hours.
Now, we can calculate the average velocity. The average velocity is the displacement divided by the total time:
Average velocity = Displacement / Total time
Average velocity = 8 km north / 3 hours
Average velocity = 8/3 km/h north
Therefore, the average velocity of the man is 8/3 km/h north. The positive sign (+) indicates that the average velocity is in the north direction.