Question

An electron, starting from rest and moving with a constant acceleration, travels 1.0 cm in 20 ms. What is the magnitude of this acceleration?​

Answer 1

s = 1/2 a t^2 distance vs acceleration

a = 2 * s / (2E-2)^2 = 2 * 1E-2 / 4E-4 = .5E2 = 50 m/s