Sally and Ramona were competing in a four-lap, one-mile foot race. Sally's style was to run at a constant rate of 12 mph. Ramona decided to run her first three laps at 11 mph, and save a 'kick' in order to run a 16 mph pace for the fourth and final lap. Who wins the race, and by how many minutes or seconds?

Question

Physics

Allisson Reilly

31 December, 01:25

Sally and Ramona were competing in a four-lap, one-mile foot race. Sally's style was to run at a constant rate of 12 mph. Ramona decided to run her first three laps at 11 mph, and save a 'kick' in order to run a 16 mph pace for the fourth and final lap. Who wins the race, and by how many minutes or seconds?

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Answers (1)

Know the Answer?

Kathleen Whitney · Answer 1

Sally wins the race by 0.03 min

Explanation:

To find time = distance / velocity

Sally;

1 mile / 12 mph

= ¹/12 hrs * 60

= 5 min

Ramona;

³/4 mile : 11 mph + ¹/4 mile : 16 mph

= ³/44 hrs + ¹/64 hrs

= 4.09 min + 0.94 min

= 5.03 min