Julian sets the simulated biker to a speed of 20km/h. After he rides his bike for 15 minutes, Julian's app reports a position of -2 1/4km. what is julians average speed so far

Julian's average speed is calculated using the formula:

\[
\text{Average Speed} = \frac{\text{Total Distance}}{\text{Total Time}}
\]

Given:
- Julian's total time riding is 15 minutes, which is \(\frac{15}{60} = 0.25\) hours.
- Julian's app reports a position of \(-2 \frac{1}{4} = -2.25\) km.

Thus, the total distance covered is \(2.25\) km (absolute value, because speed is typically positive).

Now, the average speed:

\[
\text{Average Speed} = \frac{2.25 \text{ km}}{0.25 \text{ hours}} = 9 \text{ km/h}
\]

Julian's average speed so far is **9 km/h**.

Do you want details or have any questions?

Here are some related questions:
1. What is the relationship between speed, distance, and time?
2. How do you calculate average speed for varying speeds during different intervals?
3. If Julian increased his speed to 30 km/h, what would be his new average speed?
4. How would you convert Julian's speed to meters per second?
5. Can the average speed be negative?

**Tip:** Always make sure to convert time into the same units when calculating speed, distance, or time!

Learn how to calculate Julian's average speed after riding his bike for 15 minutes. Given a reported position of -2 1/4 km and a set speed of 20 km/h, determine the average speed using basic speed, distance, and time concepts. Suitable for students in Grades 6-8.

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