Consider the Atwood machine shown in the figure, where m1 = 2.00 kg and m2 = 5.10 kg. The system starts at rest, then the sphere is given a quick push downward, giving it an initial speed of 2.80 m/s. Assume the pulley and cord are massless, and the cord is inextensible. Neglect friction. (a) Through what distance (in m) will m1 descend? m (b) What is the velocity (in m/s) of m1 after 1.80 s? magnitude m/s direction -Select--