A skateboarder starts from rest at the top and skates down a slope as shown.

After 2.5 seconds, the skateboarder has reaches a speed of 10 metres per second. What is the skateboarder's acceleration?

To calculate the skateboarder's acceleration, we need to use the following equation:

acceleration = (final velocity - initial velocity) / time

In this case, the final velocity is given as 10 meters per second. The initial velocity is the skateboarder's starting velocity, which is zero since they start from rest. The time is given as 2.5 seconds.

So, to find the skateboarder's acceleration, we can substitute the values into the equation:

acceleration = (10 m/s - 0 m/s) / 2.5 s

Simplifying the equation, we have:

acceleration = 10 m/s / 2.5 s

Dividing 10 m/s by 2.5 s gives us:

acceleration = 4 m/s²

Therefore, the skateboarder's acceleration is 4 meters per second squared.