Question: If a wheel rotates with a constant angular acceleration of 2 rad/s², what is its angular velocity after 5 seconds if it starts from rest?

Options:

1. 5 rad/s
2. 10 rad/s
3. 15 rad/s
4. 20 rad/s

Correct Answer: 10 rad/s

Solution:

Using the formula ω = ω₀ + αt, where ω₀ = 0, α = 2 rad/s², and t = 5 s, we get ω = 0 + 2 * 5 = 10 rad/s.