23.36 mph is correct for the first.
time for the last 300 m:
vf=vi+at
0=100/9.58-.2t solve for t, the time for the last 300 yards. I don't know if you want the entire 400 yards, or the last 300.
usain bolt set the world record for the 100m dash, proving to be the fastest man in history, with a time of 9.58s. what was bolt's average speed in miles per hour? (his initial speed was 100m/9.58s
I got 23.35 mph for this I need help with this.
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assume that usain bolt is running the 400m race, if he has the same average speed from above for the first 100m and then begins decelerate at a rate of -0.2 m/s^2 until the end of the race. how long dose it take him to finish the race
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1 answer