On the last day of school, Ms. Mayer starts from rest at the building doors and accelerates in a straight line at 1.2 m/s?.
a. How fast is she traveling at the end of 3 seconds?
b. How far did she travel while she accelerated those 3 seconds?

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.