To calculate the speed of the runner, you can use the formula for speed:

$\text{Speed} = \frac{\text{Distance}}{\text{Time}}$

Given:

• Distance = 50 meters
• Time = 10 seconds

Now, substitute the values into the formula:

$\text{Speed} = \frac{50 \text{ meters}}{10 \text{ seconds}} = 5 \text{ meters per second}$

So, the speed of the runner is 5 meters per second.

Would you like more details or have any questions?

Here are some related questions:

1. How would the speed change if the runner took 15 seconds instead of 10 seconds?
2. What is the difference between speed and velocity?
3. How can average speed be different from instantaneous speed?
4. What factors can affect a runner's speed?
5. How is speed related to distance and time?
6. What is the SI unit of speed?
7. Can a runner have varying speed during the 50-meter run?
8. How do you calculate the speed if the distance and time are given in different units?

Tip: When calculating speed, always ensure that the units for distance and time are compatible.