Recent content by wraithseeker

The maximum height and distance user inputted. Find initial velocity. Direction is calculated already.

Homework Statement I'm trying to find a equation that will connect a object that is thrown to form a parabolic motion of a projectile. What I want to be able to sub it in is maxheight and displacement covered by the projectile Homework Equations I don't really know, maybe vi = vf +...

But when I get the length of the velocity vector, it can never get to negative and I think that the lowest is 1?

How do you know that a object's velocity is 0.00 or below meaning that is not moving at all?

How would you do it if you were given initial x y z components of the object known as position vector and velocity vector of the object. Gravity is -981 in my case.

v = v0 + a*t x = x0 + v*t Is there a page or a website where I can view kinematic equations like this which explains them and list them all down.

I solved it, thanks guys.

It returns the height needed for the timestep, it's hard to explain, I didn't make that equation.

I tried that but it didn't work that's why I asked about the direction. vx = Cos(angle)*vx+ Sin(angle)*vy vy = -Sin(angle)*vx+Cos(angle)*vy I did something like this. Imagine actual angle is the front of the person but after setting the values, I set it to be 90 degrees that will be converted...

Where can I find it? I googled to no avail too.

It was slowly done from a quadratic equation.

Ok a slighty offtopic question, is rotating a vector the same as changing the direction of a vector? How would you change the direction of a vector? vx = vx *Cos(angle) vy = vy *Sin(angle) or am I wrong?

Is it taken in radians or degrees currently? Here's how I tried to apply it vx = Cos(angle)*vx+ Sin(angle)*vy vy = -Sin(angle)*vx+Cos(angle)*vy vx = velocity X vy = velocity Y angle = new angle

For 2D I still don't really get you, do I multiply it by cos angle and sin angle or the one below? Or do I subtract it.

I searched wikipedia but it was too confusing so i asked for help here. EDIT: what about 3D?