If a person runs 10 km in 40 minutes, what is his speed in m/s? (2021)

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Question: If a person runs 10 km in 40 minutes, what is his speed in m/s? (2021)

Options:

Correct Answer: 4.17 m/s

Exam Year: 2021

Solution:

Speed in m/s = (10 km * 1000 m/km) / (40 min * 60 s/min) = 10000 m / 2400 s = 4.17 m/s.

If a person runs 10 km in 40 minutes, what is his speed in m/s? (2021)

If a person runs 10 km in 40 minutes, what is his speed in m/s? (2021)

Step 1: Convert the distance from kilometers to meters. Since 1 kilometer is equal to 1000 meters, multiply 10 km by 1000 to get 10000 meters.
Step 2: Convert the time from minutes to seconds. Since 1 minute is equal to 60 seconds, multiply 40 minutes by 60 to get 2400 seconds.
Step 3: Calculate the speed in meters per second (m/s) by dividing the distance in meters by the time in seconds. So, divide 10000 meters by 2400 seconds.
Step 4: Perform the division: 10000 / 2400 equals approximately 4.17 m/s.

Unit Conversion – The question tests the ability to convert kilometers to meters and minutes to seconds to calculate speed.
Speed Calculation – The question assesses the understanding of the formula for speed, which is distance divided by time.