An Electron of Mass 9

Multiple Choice

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