Ignore air resistance.

A diver starts 30 feet above the water (about the height of an Olympic platform diver). What is the diver’s velocity at impact?

Question

Ignore air resistance.

A diver starts 30 feet above the water (about the height of an Olympic platform diver).  What is the diver’s velocity at impact?

anonymous · Answer

@experimentX  can u help?

experimentx · Answer

$$ v^2 = u^2 + 2  a s$$
u = 0 (initial vecolity
v = final velocity 
a = acceleration due to gravity (9.8 m/s^2) <-- change it into feet/sec^2
s = 30 feet
calculate it

anonymous · Answer

here is what i ddi so far  can u check? 2(9.8) (9.14) = vf^2 - 0^2

anonymous · Answer

using second equation of motion
2as = vf^2 -vi^2

experimentx · Answer

seems okay https://www.google.com/search?q=convert+30+feet+into+meters&rlz=1C1ASUT_enNP447NP447&oq=change+30+feet+into+&aqs=chrome.1.57j0l3j62l2.9186j0&sourceid=chrome&ie=UTF-8

anonymous · Answer

putting it as a = g =9.8
s = 30 feet = i changed it in meters      
vi =0
then to find vf

anonymous · Answer

ok

experimentx · Answer

ok ok