Posted by Priyanka on Friday, March 16, 2012 at 5:28pm.
A pole-vaulter of mass 59.9 kg vaults to a height of 5.9 m before dropping to thick padding placed below to cushion her fall.
(a) Find the speed with which she lands.
(b) If the padding brings her to a stop in a time of 0.48 s, what is the average force on her body due to the padding during that time interval?
I have no clue how to even start this! If someone could help, then please; I would appreciate it!
Physics - bobpursley, Friday, March 16, 2012 at 5:55pm
a. find the speed from the height he fell.
Physics - Priyanka, Friday, March 16, 2012 at 8:54pm
Do I use kinematic equation for part a?
And what would be the force for part b?
Physics - Elena, Saturday, March 17, 2012 at 9:31am
From the law of conservation of energy:
PE = KE
mgh = mv^2/2
Physics - Priyanka, Saturday, March 17, 2012 at 12:45pm
Thank you Elena :) !
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