
1)
What is translational motion ?
If an object
is as small as a point ( it has only one dimension ), it always has
translational motion
As for other objects, they have a translational motion if each of their
points:
 move at the same speed.
 move in the same direction.
For simplification we can say that an object has a translational motion
if it doesn't rotate.
2)
kinetic energy formula
Translational
kinetic energy ( KE ) depends on speed ( v ) and mass ( m ) of the
moving object.
It can be expressed by the following relationship:
KE
= 1
x m x v^{2}
2

m in kilogram (kg)

v in meter per second (m/s)
 Ec in
joule (J)
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