To find the angular velocity of the baseball bat when it strikes the ball at the end of a 0.75s swing, we can use the following equation:
ω = ω₀ + αt
Where: ω is the final angular velocity ω₀ is the initial angular velocity (which we assume to be 0, as we are considering the start of the swing as the reference point) α is the angular acceleration t is the time
Given: α = 2.3 rad/s² (angular acceleration) t = 0.75 s (time)
Plugging in the values, we have:
ω = 0 + 2.3 * 0.75
ω = 1.725 rad/s
Therefore, the angular velocity of the baseball bat when it strikes the ball at the end of a 0.75s swing is approximately 1.725 rad/s.