Recent content by wraithseeker

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    Parabolic Motion of a projectile

    The maximum height and distance user inputted. Find initial velocity. Direction is calculated already.
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    Parabolic Motion of a projectile

    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 +...
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    High School Object Velocity 0.00: How to Tell if It's Not Moving

    But when I get the length of the velocity vector, it can never get to negative and I think that the lowest is 1?
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    High School Object Velocity 0.00: How to Tell if It's Not Moving

    How do you know that a object's velocity is 0.00 or below meaning that is not moving at all?
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    How to Calculate 3D Projectile Movement with Initial Vectors?

    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.
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    High School Kinematic Equations: View List & Explanations

    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.
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    Undergrad How to Rotate a Velocity Vector: Maths & Logic

    I solved it, thanks guys.
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    Undergrad Speed of the knockback is <= 0

    It returns the height needed for the timestep, it's hard to explain, I didn't make that equation.
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    Undergrad How to Rotate a Velocity Vector: Maths &amp; Logic

    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...
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    Undergrad How to Rotate a Velocity Vector: Maths &amp; Logic

    Where can I find it? I googled to no avail too.
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    Undergrad Speed of the knockback is <= 0

    It was slowly done from a quadratic equation.
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    Undergrad How to Rotate a Velocity Vector: Maths &amp; Logic

    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?
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    Undergrad How to Rotate a Velocity Vector: Maths &amp; Logic

    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
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    Undergrad How to Rotate a Velocity Vector: Maths &amp; Logic

    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.
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    Undergrad How to Rotate a Velocity Vector: Maths &amp; Logic

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