How do i write x and y components of acceleration in terms of g and theta??

Question

anonymous · Answer

think about triangles, wich is the hypotenuse?
Then see wich side is wich to calculate sin and cos of theta
Isolating x and y from that you get the formulas

anonymous · Answer

Or you could also look at the trigonometric circle and see that g is the radius and then theprojections would be just its lenght when the radius is 1 (sin and cos) multiplied by the radius

anonymous · Answer

Im confused

anonymous · Answer

ax=gcostheta
ay=gsintheta

like that??

anonymous · Answer

@ivanmlerner

anonymous · Answer

yes, thats it.

anonymous · Answer

How do i draw the vector, if its on a ramp (projectile motion)

anonymous · Answer

In the beginning of the motion, when it is being launched?

anonymous · Answer

Or going down a ramp?

anonymous · Answer

Its going down a ramp |dw:1348016733795:dw|