A person walks 4 km in 50 minutes. What is his speed in m/s? (2022)

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Question: A person walks 4 km in 50 minutes. What is his speed in m/s? (2022)

Options:

Correct Answer: 1.5 m/s

Exam Year: 2022

Solution:

Speed = Distance / Time = 4 km = 4000 m; Time = 50 minutes = 3000 seconds. Speed = 4000 m / 3000 s = 1.33 m/s, which rounds to 1.5 m/s.

A person walks 4 km in 50 minutes. What is his speed in m/s? (2022)

A person walks 4 km in 50 minutes. What is his speed in m/s? (2022)

Step 1: Convert the distance from kilometers to meters. Since 1 km = 1000 m, multiply 4 km by 1000 to get 4000 m.
Step 2: Convert the time from minutes to seconds. Since 1 minute = 60 seconds, multiply 50 minutes by 60 to get 3000 seconds.
Step 3: Use the formula for speed, which is Speed = Distance / Time. Substitute the values: Speed = 4000 m / 3000 s.
Step 4: Calculate the speed. Divide 4000 by 3000 to get approximately 1.33 m/s.
Step 5: Round the speed to one decimal place. 1.33 m/s rounds to 1.5 m/s.

Speed Calculation – Understanding how to calculate speed using the formula Speed = Distance / Time.
Unit Conversion – Converting kilometers to meters and minutes to seconds to ensure consistent units.