• Support PF! Buy your school textbooks, materials and every day products Here!

Kinematics Question

  • Thread starter GreenPrint
  • Start date
  • #1
1,196
0

Homework Statement


I had a problem with e
http://img717.imageshack.us/img717/755/captureso.jpg [Broken]
http://img34.imageshack.us/img34/1149/capture2vp.jpg [Broken]

Homework Equations



see below

The Attempt at a Solution



So I assumed that there was no y component of velocity once the ball reaches it's lowest point. I believe this to be a very legit assumption. Even the scoring guidelines made this assumption.

The next thing that I did was use the velocity naught equation below that incorpates the velocity the acceleartion and the time in order to solve for the time

i didn't know the velocit though so i solved it using the equation velocity squared equation that incorporates the velocity naught the acceleration and the displacement which i knew all the terms and solved for the final velocity

i then solved for the time

i was then able to solve for the horizontal displacement sense the step before asked me to solve for the velocity naught in the x direction

The scoring guidelines confirmed my value i used for the horizontal velocity

http://img44.imageshack.us/img44/5169/capturej.jpg [Broken]
http://img502.imageshack.us/img502/8854/capture2fc.jpg [Broken]
http://img37.imageshack.us/img37/4259/capture3fo.jpg [Broken]
http://img686.imageshack.us/img686/9018/captureym.jpg [Broken]

Homework Statement


Homework Statement



so i really do not see what i'm doing wrong here....
 
Last edited by a moderator:

Answers and Replies

  • #2
rl.bhat
Homework Helper
4,433
5
Your calculation appears to be correct.
 

Related Threads for: Kinematics Question

  • Last Post
Replies
6
Views
624
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
6
Views
562
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
8
Views
2K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
4
Views
2K
Top