## elli6687 A machine shop grinding wheel accelerates from rest with a constant angular acceleration of 2.5 rad/s^2 for 7.1s and is then brought to rest with a constant angular acceleration of -4.1rad/s^2 one year ago one year ago

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1. elli6687

what is the total elapsed time?

2. Algebraic!

$\omega = \alpha t$ where alpha = 2.5 and t = 7.1 find omega. use in: $-\omega = -4.1t$ find t total time is 7.1 seconds + t

3. Fellowroot

4. Algebraic!

@Fellowroot why do you take a root to find t?

5. Algebraic!

the equation doesn't contain t^2