The mass of an electron traveling at 0.8c is how many times as great as its rest mass?
A)0.60
B)0.78
C)0.80
D)1.28
E)1.67

Name: The mass of an electron traveling at 0.8c is how many times as great as its rest mass? A)0.60 B)0.78 C)0.80 D)1.28 E)1.67
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Question

Quizplus · Accepted Answer

The relativistic mass increases with velocity according to the formula m = m0 / sqrt(1 - v^2/c^2). At 0.8c, the mass is 1.67 times the rest mass.

The Mass of an Electron Traveling at 0