Question

a
212) The four velocity of a particle
is a
a) unit space- like vector
b) unit time- like vector
c) unit null- like vector
d) None of these
​

Answer 1

Answer:

l think option b is right

Answer 2

Answer:

b) unit time - like vector

Step-by-step explanation:

In physics, in particular, in special relativity and general relativity, a four-velocity is a four-vector in four-dimensional spacetime that represents the relativistic counterpart of velocity, which is a three-dimensional vector in space.

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