Posted by Danreb on Sunday, October 19, 2008 at 9:20pm.
A girl shoots an arrow from the top of a cliff. The arrow is initially at a point 20 meters above the level field below. The arrow is shot at an angle of 30 degrees above the horizontal with a speed of 39.2m/s. How far out from the base of the cliff will the arrow land?

physics!  bobpursley, Sunday, October 19, 2008 at 9:44pm
You need to first find the time in the air, from the vertical flight equation. You can figure the initial vertical velocity from the angle.
hcliff=vi*time 1/2 g time^2
solve for time.
Then, use that time for the horizontal equation..
d=vhorizontal*tiem

physics!  Danreb, Sunday, October 19, 2008 at 10:20pm
i tried that. it doesnt work

physics!  Danreb, Sunday, October 19, 2008 at 10:33pm
nvm it works. thanksssssss
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