Velocity and Average Velocity
المؤلف:
Professor John W. Norbury
المصدر:
ELEMENTARY MECHANICS & THERMODYNAMICS
الجزء والصفحة:
p 48
12-12-2016
2573
Velocity and Average Velocity
In 1-dimension, the average velocity was defined as displacement divided by time interval or 
. Similarly, in 3-dimensions average velocity is defined as
For 1-dimension, the instantaneous velocity, or just velocity, was defined as 
. In 3-dimensions we define velocity as
Thus velocity is a vector.
Point to note: The instantaneous velocity of a particle is always tangent to the path of the particle.
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