Question

Lin and Diego both ran for 10 seconds, each at their own constant speed. Lin

ran 40 meters and Diego ran 55 meters.
Han ran 100 meters in 20 seconds at a constant speed. Is this speed faster,
slower, or the same as Lin's? Diego's?

Answer 1

Han's speed is faster than Lin's and slower than Diego's. Calculating each runner's speed, Lin ran at 4 m/s, Diego at 5.5 m/s, and Han ran at 5 m/s.

Step-by-step explanation:

To determine if Han's speed was faster, slower, or the same as Lin's and Diego's, we must calculate the speed of each person. Speed is defined as the distance traveled divided by the time taken to travel that distance.

Lin's speed is calculated as follows:

• Distance traveled by Lin: 40 meters
• Time taken by Lin: 10 seconds
• Lin's speed: 40 meters / 10 seconds = 4 m/s

Diego's speed is calculated as follows:

• Distance traveled by Diego: 55 meters
• Time taken by Diego: 10 seconds
• Diego's speed: 55 meters / 10 seconds = 5.5 m/s

Han's speed is calculated as follows:

• Distance traveled by Han: 100 meters
• Time taken by Han: 20 seconds
• Han's speed: 100 meters / 20 seconds = 5 m/s

Comparing the speeds:

• Han's speed (5 m/s) is faster than Lin's speed (4 m/s).
• Han's speed (5 m/s) is slower than Diego's speed (5.5 m/s).