A negatively charged particle p is placed, initially at rest, in a constant, uniform gravitational field and a constant, uniform electric field as shown in the diagram. What qualitatively, is the shape of the trajectory of the electron ?

Question

G1 Physics · Accepted Answer

Step 1: In a uniform electric field the charge has constant acceleration 𝐚 = q𝐄/m, so the motion is mathematically identical to projectile motion. Step 2: Resolve the initial velocity and use x = uₓt, y = uᵧt + (1/2)at². Step 3: Impose the target/trajectory condition and solve for angle or time. Final: Option D.