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

Cannonball Trajectory Problem

  • Thread starter Overberg
  • Start date
1
0
Homework Statement
A cannon fires a ball at 140 m/s
at an angle of 35 degrees above
the horizontal.
• Find the position of the ball 9.25
seconds after launch.
• Find its velocity 9.25 seconds after
launch.
• Is the ball on its way up or down?
• How long does it take the ball to
arrive at the same level as it was
launched?
• What is its velocity when it arrives at
the same level as it was launched?
• What is the angle at which it arrives
at the same level as it was launched?
Homework Equations
v_x=v_xi
x-x_i=v_xi(t)
𝑣𝑦 = 𝑣𝑦𝑖 − 𝑔t
𝑦 − 𝑦𝑖 = 𝑣𝑦(t)-1/2gt^2
IMG_0038[1].JPG
 

BvU

Science Advisor
Homework Helper
12,346
2,746
Hello Ovreberg, :welcome: !

Please read the guidelines: if you expect helpers to decipher things like
1570380500496.png
you did not understand them. Either type your work (preferred) or post a very clear picture with textual explanation what you do.

What is your question ?

I can decipher a ##\vec v = \sqrt{....}## which can't be right: LHS is a vector and RHS is a scalar !
 

fresh_42

Mentor
Insights Author
2018 Award
11,595
8,067
Hello!

It is easy to type in formulas on PF, have a look on how it is done:
Images if necessary are better seen, if it is the only focus. But mspaint and an upload will do in many cases.
 

Want to reply to this thread?

"Cannonball Trajectory Problem" You must log in or register to reply here.

Related Threads for: Cannonball Trajectory Problem

  • Posted
Replies
2
Views
4K
  • Posted
Replies
5
Views
1K
Replies
3
Views
1K
Replies
1
Views
1K
  • Posted
Replies
1
Views
4K
Replies
1
Views
8K
  • Posted
Replies
3
Views
2K
  • Posted
2
Replies
35
Views
3K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top