# physics help

posted by john

The pole vault landing pad at an Olympic competition contains what is essentially a bag of air that compresses from its "resting" height of 1.1 m down to 0.1 m as the vaulter is slowed to a stop.
(a) What is the time interval during which a vaulter who has just cleared a height of 6.9 m slows to a stop?

(b) What is the time interval if instead the vaulter is brought to rest by a 19.2-cm layer of sawdust that compresses to 4.6 cm when he lands?
2 ms

1. bobpursley

2. joseph

ye i don't understand ho your explaining with the other guy who posted it. i don't know where you get any of your number from

3. dan

4. john

5. Anonymous

what is energy?

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