alleryStart learning →An object's angular acceleration is 36 rad/s^2 and it starts at an angular velocity of 6.0 rad/s. What is its angular velocity after 5.0 s?
A30 rad/s
B42 rad/s
C150 rad/s
D186 rad/s
Answer & Solution
Correct answer: D. 186 rad/s
1. omega = omega_0 + alpha t.
2. omega = 6.0 rad/s + (36 rad/s^2)(5.0 s) = 6.0 + 180.
3. omega = 186 rad/s.
_Source: OpenStax Physics (CC BY 4.0), Ch 6 "Circular and Rotational Motion", section 6.3 Rotational Motion_
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