Carl Lewis set a world record for the 100.0-m run with a time of 9.86 s. If after reaching the finish line, Mr. Lewis walked directly back to his starting point in 90.9 s, what is the magnitude of his average velocity for the 200.0m?

100/9.86 with give you his velocity running.

100/90.9 will give you his velocity walking.

Average the two to get his average velocity in m/sec for the 200 m.

100/9.86= 10.14

100/90.9=1.1
(10.14+1.1)/2= 5.62m/s

To find the magnitude of Carl Lewis's average velocity for the 200.0m race, we need to determine the total distance he covered and the total time it took him.

Since he ran 100.0m in 9.86 seconds, it means he ran another 100.0m while walking back to the starting point. So, the total distance covered is 200.0m.

The total time it took him is the sum of his running time and his walking time. His running time is 9.86 seconds, and his walking time is 90.9 seconds, giving us a total time of 9.86 + 90.9 = 100.76 seconds.

Now, we can calculate the average velocity using the formula:

Average velocity = Total distance / Total time

Average velocity = 200.0m / 100.76 s = 1.985 m/s.

Therefore, the magnitude of Carl Lewis's average velocity for the 200.0m race is approximately 1.985 m/s.

To find the magnitude of Carl Lewis's average velocity for the 200.0m race, we need to calculate the total displacement and divide it by the total time taken.

First, let's find the total displacement. Since Carl Lewis ran 100.0m forward and then walked back to his starting point, his displacement can be calculated by subtracting the distance he walked back from the distance he ran:
Displacement = 100.0m - 100.0m = 0.0m

Next, we calculate the total time taken. This includes the time for both the run and the walk.
Total time = Time for the run + Time for the walk = 9.86s + 90.9s = 100.76s

Now we can calculate the magnitude of his average velocity:
Average velocity = Displacement / Total time

Since Carl Lewis did not move any distance in the 200.0m race (displacement = 0.0m), the average velocity is:
Average velocity = 0.0m / 100.76s = 0.0 m/s

So, the magnitude of Carl Lewis's average velocity for the 200.0m race is 0.0 m/s.