A wheel has angular acceleration of `3.0 rad//s^2` and an initial angular speed of `2.00 rad//s`. In a tine of `2 s` it has rotated through an angle (in radian) of

Options

A. 6
B. 10
C. 12
D. 4

Answer

B

Explanation

The kinematical equation for angular motion is
`theta=omega_(0)t+(1)/(2)alphat^(2)`
Hence, `theta =2xx2+(1)/(2)xx3xx(2)^(2)or theta=4+6=10` rad.