Part 2: Finding each runner's unit rate in feet per second (2 points each).

Question

For this section of the portfolio, you will need to use the data in the table found above. You will need to find each runner's unit rate, or how fast they run per second. Remember, when solving for unit rates, your goal is to make the denominator 1. You must show your work to receive full credit. Round to the nearest hundredth if necessary.

Answer 1

To find each runner's unit rate in feet per second, we need to divide the distance each runner runs by the time it takes them to run that distance.

Runner 1's unit rate:
Distance: 1500 feet
Time: 60 seconds
Unit rate = Distance ÷ Time = 1500 ft ÷ 60 s = 25 ft/s

Runner 2's unit rate:
Distance: 1600 feet
Time: 64 seconds
Unit rate = Distance ÷ Time = 1600 ft ÷ 64 s = 25 ft/s

Runner 3's unit rate:
Distance: 1400 feet
Time: 70 seconds
Unit rate = Distance ÷ Time = 1400 ft ÷ 70 s = 20 ft/s

Runner 4's unit rate:
Distance: 1300 feet
Time: 50 seconds
Unit rate = Distance ÷ Time = 1300 ft ÷ 50 s = 26 ft/s

Runner 5's unit rate:
Distance: 1550 feet
Time: 62 seconds
Unit rate = Distance ÷ Time = 1550 ft ÷ 62 s = 25 ft/s