Momentum for a system can be conserved in one direction while not being conserved in another. what is the anglebetween the directions? give an example.

90°

Explanation:

The angle will be 90° when momentum for a system can be conserved in one direction while not being conserved in another.

The example can be

If we apply force on an object horizontally in west direction, then as in other direction south or north we cannot apply the principal of momentum conservation.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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