Question about projectile motion

[soul5]

I have a question when any object is in project motion is the vertical acceleration of the object equal to 9.81m/s^2 (gravity)?

 

[mgb_phys]

Yes - (ignoring air resistance) remember to get the signs right, it acts down!

 

[Doc Al]

Yes. (Given the usual assumptions: Near the Earth's surface; no air resistance.)

 

[soul5]

Yes. (Given the usual assumptions: Near the Earth's surface; no air resistance.)

I have another question what equations can I use to find intial v, the angle and maximum height on projectile motion?

 

[Antuan]

I have another question what equations can I use to find intial v, the angle and maximum height on projectile motion?

For initial V you only need:

initial V = (X - initial X) / t


For maximum height (you are asking for final y, where initial y=0, and initial V=0) :

y = (4.9m/s^2) (t^2)


Finally, angles are found using Pythagoras theorem or sen, cos, and tan famous equations. Review your trigonometry.