A world-class runner can complete a 100m dash in about 10s. past studies have shown that the runners in such a race accelerate uniformly for a time t (u) and then run at a constant speed for the remainder of the race. a world-class runner is visiting your physics class - hooray! you are to develop a procedure that will allow you to determine the uniform acceleration a (u) and an approximate value of t (u) for the runner in a 100m dash. by necessity your experiment will be done on a straight track and include your whole class of eleven students.

Step #1

Set up a table of the runner's names and how long it takes them to run 100 meters.

Chart needed to track results in conducted experiment

Step #2

Lay out the measuring tape to equal the length of 100 meters.

Step #3

Shoot the starter pistol and began to time each runner individually, to get the correct times for each one.

Step #4

After getting all the times for each runner, divide each time t by the distance of 100 meters, to find the rate of velocity. Then divide the change in velocity by time again to find

a

Uniform Acceleration

Uniform acceleration will occur during the whole race - - with the hope that every runner runs at a constant rate of velocity.

You would calculate this by dividing the time by the distance traveled, or

t

/100m.