A particle is travelling with a constant speed. What does this mean?

1.	A particle is travelling with a constant speed. What does this mean?
A.	The position of the particle remains constant as time passes.
B.	The particle covers equal distances in equal time intervals.
C.	The acceleration of the particle is zero.
D.	The particle does not change its direction of motion.
Answer» C. The acceleration of the particle is zero.

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A particle is travelling with a constant speed. What does this mean?

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