Four students run in different races. Use the information in the table to describe and compare the motion of the four students. Use the data in your answer. – 7509

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1. Speed is calculated using the formula: speed = distance ÷ time.
   Race A is the shortest distance, and Race D is the longest.
   Race B and C are the same distance, but Students B and C take different times.
   Student D takes the longest time to finish their race.
   Calculations:
   Student A: 15 ÷ 6 = 8.3 m/s
   Student B: 100 ÷ 15 = 6.7 m/s
   Student C: 100 ÷ 14 = 7.1 m/s
   Student D: 200 ÷ 31 = 6.5 m/s
   Conclusions:
   Race B is twice the distance of Race A, but takes more than twice the time.
   Student C is faster than Student B (same distance, shorter time).
   As race length increases, average speed decreases.

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