Raul biked at a steady speed of $12 \mathrm{km}/h$ for $3$ hours. What was his average velocity during this time?

• A. $4 \mathrm{km}/h$
• B. $15 \mathrm{km}/h$
• C. $36 \mathrm{km}/h$
• D. $12 \mathrm{km}/h$

Answer: (D)

Verified step by step guidance

1. Understand that average velocity is defined as the total displacement divided by the total time taken. Since Raul is biking at a steady speed in a straight direction, his average velocity will be equal to his constant speed.
2. Identify the given values: speed = 12 km/h, time = 3 hours.
3. Calculate the total displacement using the formula: \(\text{displacement} = \text{speed} \times \text{time}\).
4. Since the speed is constant and direction does not change, the average velocity is the same as the speed, which is \$12\ \text{km/h}$.
5. Conclude that Raul's average velocity during this time is \$12\ \text{km/h}$.