A proton is initially at the point (x, y) - (0, -1.5 m) in Figure P18.37. An

Question:

A proton is initially at the point (x, y) - (0, -1.5 m) in Figure P18.37. An external force then moves the proton to (x, y) = (3.0 m, 0). If the proton begins from rest and has a final speed of zero, what is the work done by the external force on the proton?

Figure P18.37

y (m) -3 x (m) -4 15 V 10 V :-3 V = 5 V