Answer:
Explanation:
We shall apply newton's law equation valid for rotational motion .
ωt = ω₀ + α t where ωt  is angular velocity after time t , ω₀ is angular velocity at t= 0 and α is angular acceleration
145 = 0 + α x 5.8
α = 25 rad / s²
B )
θ = ω₀ t +  1/2 α t²
= 0 + .5 x 25 x 5.8 x 5.8
= 420.5 rad .
