Do positrons and protons have the same motion in an electric field?

Say a positron and a proton are shoot into an uniform electric field horizontally with the same speed, would they have the same path of motion?

Since the positron has a smaller mass, and acceleration is inversely proportional to the mass, does it mean that it will have a greater acceleration and hence have a different path?

But comparing it with a mass projectiled in a gravitational field, shouldn't two objects with different masses have the same flight path?



please explain why or why not this is the case...thank you!Do positrons and protons have the same motion in an electric field?You're pretty much right. The acceleration of the positron will be greater in an electric field because of the reduced mass (and hence it will follow a different path), but in a gravitational field they will be the same.