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Which of the following describes a situation in which the total distance a hockey player travels is 0 meter from his starting point?

The player skates 0 meter forward and then skates 8 meters in the opposite direction.

The player skates 9 meters forward and then skates 8 meters in the opposite direction.

The player skates 12 meters forward and then skates 0 meter in the opposite direction.

The player skates 12 meters forward and then skates 12 meters in the opposite direction.

Respuesta :

carlosego
For this case what we must do is a sum of vectors:
 The player skates 12 meters forward:
 v1 = 12j
 then skates 12 meters in the opposite direction:
 v2 = -12j
 Adding vectors we have:
 v1 + v2 = 12j - 12j
 v1 + v2 = 0j
 Answer:
 The player skates 12 meters forward and then skates 12 meters in the opposite direction.
crhinds1

the skater skates 12 meters forward then 12 meters in the opposite direction

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