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.

Question

(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

have no idea how to solve this please help

Answer 1

http://www.jiskha.com/search/index.cgi?query=+The+pole+vault+landing+pad+at+an+Olympic+competition+contains+what+is+essentially+a+bag+of+air+that+compresses+from+its+%22resting%22+height+of+1.1+m+down+to+0.1+m+as+the+vaulter+is+slowed+to+a+stop.+

Answer 2

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

Answer 3

i don't get this either please help me thanks.

Answer 4

i clicked this link and the numbers i see are different than the question. please help

Answer 5

what is energy?