How can I input formulas and images on Physics Forums?

[Overberg]

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?

Relevant Equations

v_x=v_xi
x-x_i=v_xi(t)
𝑣𝑦 = 𝑣𝑦𝑖 − 𝑔t
𝑦 − 𝑦𝑖 = 𝑣𝑦(t)-1/2gt^2

 

[BvU]

Hello Ovreberg, !

Please read the guidelines: if you expect helpers to decipher things like

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]

Hello!

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