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10.4 Block with vertical movement

Block with vertical movement. Allows only one friction force, vertical or horizontal.

Equations:	3 or 4 (if all the applied forces are vertical the block have 3 equation, otherwise have 4).
Data:
Name:	Name of the block.
m:	Mass block.
a:	Acceleration of the block.
vi:	Initial velocity.
vf:	Final velocity.
d:	Travelled distance.
Relative to:	To default is sf meaning that the data is measured from a stationary reference system. But you can set a block whit horizontal movement, if the data is relative to that block.