physics
posted by sabeen .
anyone who knows the answer to this question please show your work.
drwls i know i posted this queestion before but you didn't reply to my comment.
Your friend has climbed a tree to a height of 6.00 m. You throw a ball vertically up to her and it is traveling at 5.00 m/s when it reaches her. What was the speed of the ball when it left your hand if you released it at a height of 1.10 m?

physics 
bobpursley
Initial KE= change in PE+finalKE
1/2 m vi^2=mgh + 1/2 m vf^2 where h is the difference in heights, ie (6.001.10)m
solve for vi
solve for vi 
physics 
sabeen
i still don't understand:( what is mgh and what is PE??? what is m? i don't understnad many of the variables in this equation. i was never taught this in class neither have i ever heard of this equation. im sorry mr.pursley. i really am.

physics 
bobpursley
I would drop your class, you are being cheated.
M mass
g acceleration due to gravity
h distance, or change in height
mgh is potential energy (PE)
If these are not in your text, or never had this in class, or have never heard of it, something is wrong. Either you are lost, or the class is going to la la land, at any rate, you are not learning physics. 
physics 
sabeen
idk somehow i am doing well.

physics 
Henry
d = 6.0  1.1 = 4.9m.
Vf^2 = Vo^2 + 2gd = 5^2,
Vo^2 + 2(9.8)4.9 = 25,
Vo^2  96.04 = 25,
Vo^2 = 25 + 96.04 = 121.04,
Vo = sqrt(121.04) = 11m/s.
Respond to this Question
Similar Questions

Why can't I post
I don't know why, but i am getting a friend to post this up for me, but i cannot post a question, when i do, the successful window never comes up. it just goes back to the forum and doesnt add. can anyone help me why? 
math
Posted by mota THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? 
math
Posted by mota on Saturday, March 1, 2008 at 3:34am. THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? 
physics =(
A person on a small, 7.00 meter high, hill aims a waterballoon slingshot straight at a friend hanging from a tree branch 4.00 meters above and 6.00 meters away. At the instant the water balloon is released at 7.00 m/s, the friend … 
Math
I posted these 2 questions a couple of days ago and although the help I received would have been more appreciated if it didn't come with an underhanded comment, I did see where I made my mistake with the first question, however I would … 
physics
Your friend has climbed a tree to a height of 6.00 m. You throw a ball vertically up to her and it is traveling at 5.00 m/s when it reaches her. What was the speed of the ball when it left your hand if you released it at a height of … 
physics
anyone else know how to go about solving this complicated problem? 
math
The Python snake climbed 10 feet up a 12 foot tree and the boa constrictor snake climbed 16 feet up an 18 foot tree. Write the fraction of the tree each snake climbed. Simplify the fractions and compare the distances. my answer: 10/12 … 
help help helppppp pleasee
ý posted some question of physics... please any one answer me.... qyestions are bellow ý posted before 3 hours... 
geometry
can someone please show me the answer for this problem ?