# 4. Two runners in a 100 m race start from the same place. Runner A starts...

###### Question:

4. Two runners in a 100 m race start from the same place. Runner A starts as soon as the starting gun is fired and runs at a constant speed of 8.00 m/s. Runner B isn't really paying attention and starts running 2.0 s later and runs at a constant speed of 9.3 m/s. a. Draw a position vs time graph for each runner. b. Who wins the race? c. At the instant the winner crosses the finish line, how far is the winner ahead of the other runner? d. If the runners decide they want to cross the finish line together, and Runner A again begins the instant the starting gun is fired, how many seconds should Runner B delay in order to catch Runner A exactly at the finish line?

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