Question: If a soldier can march 4 km in 50 minutes, what is his speed in m/s? (2020)
Options:
1.2 m/s
1.5 m/s
1.8 m/s
2.0 m/s
Correct Answer: 1.2 m/s
Exam Year: 2020
Solution:
Speed = (4 km × 1000 m/km) / (50 min × 60 s/min) = 1.33 m/s
If a soldier can march 4 km in 50 minutes, what is his speed in m/s? (2020)
Practice Questions
Q1
If a soldier can march 4 km in 50 minutes, what is his speed in m/s? (2020)
1.2 m/s
1.5 m/s
1.8 m/s
2.0 m/s
Questions & Step-by-Step Solutions
If a soldier can march 4 km in 50 minutes, what is his speed in m/s? (2020)
Step 1: Convert the distance from kilometers to meters. Since 1 kilometer is equal to 1000 meters, multiply 4 km by 1000 to get the distance in meters.
Step 2: Convert the time from minutes to seconds. Since 1 minute is equal to 60 seconds, multiply 50 minutes by 60 to get the time in seconds.
Step 3: Calculate the speed using the formula: Speed = Distance / Time. Use the values obtained in Steps 1 and 2.
Step 4: Simplify the calculation to find the speed in meters per second (m/s).
Speed Calculation – Understanding how to convert distance and time into speed, specifically converting kilometers to meters and minutes to seconds.
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