일반물리학 1 — Kinetic Energy and Work: Problem 1

1 When accelerated along a straight line at \(2.8 \times 10^{15} \text{ m/s}^2\) in a machine, an electron (mass \(m = 9.1 \times 10^{-31} \text{ kg}\)) has an initial speed of \(1.4 \times 10^7 \text{ m/s}\) and travels \(5.8 \text{ cm}\). Find (a) the final speed of the electron and (b) the increase in its kinetic energy.