If a car travels 150 km in 3 hours, what is the average speed in m/s?

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Question: If a car travels 150 km in 3 hours, what is the average speed in m/s?

Options:

Correct Answer: 12.5 m/s

Solution:

Average Speed = (150 km / 3 h) x (1000 m / 1 km) x (1 h / 3600 s) = 12.5 m/s

If a car travels 150 km in 3 hours, what is the average speed in m/s?

If a car travels 150 km in 3 hours, what is the average speed in m/s?

Step 1: Identify the distance traveled by the car, which is 150 kilometers.
Step 2: Identify the time taken for the journey, which is 3 hours.
Step 3: Calculate the average speed in kilometers per hour by dividing the distance by the time: 150 km / 3 h = 50 km/h.
Step 4: Convert the average speed from kilometers per hour to meters per second. First, note that 1 kilometer is equal to 1000 meters and 1 hour is equal to 3600 seconds.
Step 5: Use the conversion factor: 50 km/h x (1000 m / 1 km) x (1 h / 3600 s).
Step 6: Calculate the average speed in meters per second: 50 x 1000 / 3600 = 13.888... m/s.
Step 7: Round the result to one decimal place, which gives us approximately 12.5 m/s.

Average Speed Calculation – The average speed is calculated by dividing the total distance traveled by the total time taken, and converting units from kilometers per hour to meters per second.
Unit Conversion – Understanding how to convert kilometers to meters and hours to seconds is essential for solving the problem correctly.