So, we all watched the video...and we all did the math. We found, using the total distance travelled and the total time, that Michael Johnson ran 10.35m/s. Using that number we calculated how long it should have taken him to run the first 100m. 9.67 seconds is the number most people ran up with. Yet, upon reviewing the video it appears he doesn’t hit the 100m mark until 10.1 seconds.

What happened? Was our math wrong?

Block A, you got off easy by doing it in class. Block C, you had the job of writing your thoughts on your blog.

Here is something I want everyone to think about (Block A, you must respond to this in a blog. Block C, you may choose to add this to your blog if you want):

If he ran the first 100m in 10.1 seconds, what was his average velocity for the first 100m?

What was his velocity for the last 100m? Currently the record for the 100m sprint is held by Usain Bolt at 9.58 seconds. Could Michael Johnson’s last 100m beat this record?

If Johnson and Bolt wanted to cross at the same time, how far back should Johnson be when Bolt begins to run?

Both block A and C must have their blogs written by Tuesday’s morning and you must send me the link (dwoelders@pacificacademy.net).