1.
A marathon runner sets out on a 50.0 km race that starts at Market Mall. 5.00 hours later he crosses the finish line back at the mall.
a.
What distance did he travel?
b.
What was his average velocity?
1.
A marathon runner sets out on a 50.0 km race that starts at Market Mall. 5.00 hours later he crosses the finish line back at the mall.
a.
What distance did he travel?
b.
What was his average velocity?
a. d = 50 km.
b. V = 0.
NOTE: Speed = 50km/5h = 10km/h.
To answer both questions, we can use the formula:
Average velocity = Total distance traveled / Total time taken (in this case, 5.00 hours)
a. To find the total distance traveled, we need to calculate the difference between the starting point (Market Mall) and the finishing point. Since he finishes the race back at the mall, the total distance traveled is equal to the distance between these two points.
Therefore, the answer to question (a) is 50.0 km.
b. Now let's calculate the average velocity. Since velocity is a vector quantity, it has both magnitude (speed) and direction. In this case, the direction is not specified, so we will only consider the magnitude (speed).
Average velocity = Total distance traveled / Total time taken
Using the information from the question, the total distance traveled is 50.0 km, and the total time taken is 5.00 hours. Plugging these values into the formula, we get:
Average velocity = 50.0 km / 5.00 hours
Calculating this, we find that the runner's average velocity is 10.0 km/h.
Therefore, the answer to question (b) is 10.0 km/h.