# To calculate acceleration from angular speed, you need to know the following:
- The initial angular velocity (ωi)
- The final angular velocity (ωf)
- The time interval (Δt)

you say that the final angular velocity (ωf) is **250 degrees** in a **0.2 sec** time interval.

1. lets assume the variables
    1. (ωf) = `250 °/s `
    2. (Δt) = `0.2 s`
    3. (ωi) = `0 °/s`
2. we subtract the final angular velocity to the initial angular velocity. (`250 °/s - 0 °/s` = `250°/s`)
    - we can call the output of the equation (Δω)
3. finally we divide (Δω) over (Δt). (`250°/s`/ `0.2 sec`)
    - make sure to carry the **s**

the final answer can be expressed as **1250°/s²**.

However, it's important to note that the unit for acceleration is usually expressed in radians per second squared (rad/s²) rather than degrees per second squared (°/s²).
if we expressed the equation in radians we would get **21.816 615 65 rad/s²**.

So you would have to be going **1250°/s²** or **21.816 615 65 rad/s²** to have the angular velocity of **250 degrees** in the time span of **0.2 seconds**.
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