- #1

pc2-brazil

- 205

- 3

we are new in this forum.

we have a physics question about parabolic trajectory...

when a projectile is thrown with a certain angle, with initial v_0x and v_0y speeds, the trajectory of this projectile will be a parabola...

the initial x and y velocities will be:

[tex]v_{0x}=vcos\theta[/tex]

[tex]v_{0y}=vsen\theta[/tex]

and the x and y velocities after a certain time will be:

[tex]v_{x}=v_{0}t[/tex]

[tex]v_{y}=v_{0y}-gt[/tex]

is it right?

but here is our doubt:

we were wondering how we could calculate the work of this projectile.

could it be:

[tex]\tau=Fx=Fv_{0}t[/tex]?

if our English is not very expressive, it's because we're Brazilian... we're not native English speakers.

thank you in advance,