If the mass of a particle is zero its speed must be:
A) c
B) infinite
C) 0
D) any speed less than c
E) any speed greater than c

Name: If the mass of a particle is zero its speed must be: A) c B) infinite C) 0 D) any speed less than c E) any speed greater than c
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Question

Quizplus · Accepted Answer

Particles with zero mass, such as photons, must always move at the speed of light in a vacuum, which is denoted by $c$.

If the Mass of a Particle Is Zero Its Speed