Physics

Problem

An object starts with an angular velocity of

2\,\text{rad}\,\text{s}^{-1}

t = 0

and reaches

14\,\text{rad}\,\text{s}^{-1}

t = 4\,\text{s}

, the change being uniform. a. (i) Calculate its angular acceleration. b. (ii) Find the angular displacement during this interval.