An electron of mass 9.11 *10^-³¹ kg moves with a speed of 0.800c. What is its momentum? (c = 3.00 * 10⁸ m/s) A) 3.64 * 10^-²² kg.m/s B) 2.05 * 10^-²² kg.m/s C) 6.03 * 10^-²² kg.m/s D) 1.34 *10^-²² kg.m/s

Question

Quizplus · Accepted Answer

The relativistic momentum is given by p = γmv, where γ = 1/√(1-v²/c²). For v = 0.800c, γ ≈ 1.667. Thus, p = 1.667 * 9.11 x 10^-31 kg * 0.800 * 3.00 x 10^8 m/s ≈ 3.64 x 10^-22 kg·m/s.

An Electron of Mass 9