A uniform rod of length 0.80m pivots about one end and starts from rest with a constant angular acceleration of 5.0rad/s2. After the rod has rotated through an angle of 0.40rad, what is the linear speed of the point located at the rod’s midpoint?
a) 1.6m/s
b) 2.0m/s
c) 0.80m/s
d) 0.60m/s