An experimental electromagnetic micro-shuttle of mass 12.0 g is placed across two parallel horizontal rails separated by a distance of 15.0 cm. A uniform magnetic field of flux density 0.64 T0.64\text{ T}0.64 T is directed vertically upwards through the region containing the rails, as shown in the diagram.
When the circuit is closed, a constant current of 4.5 A flows through the circuit. The shuttle accelerates uniformly from rest for 0.35 s before exiting the magnetic field.
Assuming resistive forces are negligible, calculate the maximum possible velocity of the micro-shuttle as it leaves the magnetic field.