A 0.2 kg hockey park is sliding along the eyes with an initial velocity of -10 m/s when a player strikes it with his stick, causing it to reverse its direction and giving it a velocity of +25 m/s the impulse the stick applies to the park is most nearly

The impulse applied by the stick to the hockey park is approximately 7 kilogram-meters per second.  

Explanation:

The Impulse Theorem states that the impulse experimented by the hockey park is equal to the vectorial change in its linear momentum, that is:

(1)

Where:

- Impulse, in kilogram-meters per second.

- Mass, in kilograms.

- Initial velocity of the hockey park, in meters per second.

- Final velocity of the hockey park, in meters per second.

If we know that , and , then the impulse applied by the stick to the park is approximately:

The impulse applied by the stick to the hockey park is approximately 7 kilogram-meters per second.  

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