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Until his seventies, Henri LaMothe (Fig. 9-48) excited

Chapter , Problem 23

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QUESTION:

Until his seventies, Henri LaMothe (Fig. 9-48) excited audiences by belly-flopping from a height of 12 m into 30 cm of water. Assuming that he stops just as he reaches the bottom of the water and estimating his mass, find the magnitude of the impulse on him from the water.

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QUESTION:

Until his seventies, Henri LaMothe (Fig. 9-48) excited audiences by belly-flopping from a height of 12 m into 30 cm of water. Assuming that he stops just as he reaches the bottom of the water and estimating his mass, find the magnitude of the impulse on him from the water.

ANSWER:

Step 1 of 2Impulse is nothing but the change in momentum.That is,The final momentum of the diver when he reaches the bottom of water is given by,The initial momentum of the diver before he touches the water is given by,So the impulse,The final velocity of the diver is zero, that is,So we can write the impulse,

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