1
vote
0answers
47 views

Finding the distance from a parabola (ballistic trajectory) to a point (for use in collision detection)

I need to have some form of collision detection / prevention for an object moving along a ballistic trajectory and a second stationary object on the same plane plane. The ballistic trajectory is ...
0
votes
1answer
59 views

How to find position of object on a parabola?

I'm making a computer game, where an object flies along a parabola curve. This object is 'thrown' by a 'robot' towards another robot. I know the vertex of the parabola, and also it's two ...
0
votes
1answer
97 views

Deriving Rutherford Scattering Angle expression

OK, this was an assignment and I want to be sure I am on the right track here. It's math as much as physics. We want to find an expression for $\theta$, the Rutherford scattering angle. I have an ...
0
votes
1answer
72 views

hyperbolic orbits, deriving in cartesian coordinates

I was working on this and I wanted to be sure I wasn't too far off. Given: $\frac{\alpha}{r} = 1 + \epsilon \cos \theta$ where $\epsilon$ is eccentricity. Also $\frac{(x + x_0)^2}{A^2} = ...
0
votes
1answer
139 views

Kepler, cartesian coordinates and ellipses

I am trying to see if I am on the right track with this. The problem: A kepler orbit (an ellipse) in Cartesian coordinates is: $$(1−\epsilon^2)x^2 + 2\alpha \epsilon x + y^2 = \alpha^2.$$ The task ...
2
votes
1answer
759 views

Throwing a Projectile in 2D space

Normally I am strong at maths, but here I have a Math question that after spending 5 pages, I just can't figure it out. Here goes: A person is playing a game that requires throwing an object onto a ...
0
votes
1answer
46 views

Parabolic projectile equation demonstration question

I was looking at a book of physics and, it will sound dumb, but while I know that the maximum height equation of a projectile is max=(v·senα)/2g, I can't understand how do you get there from ...
0
votes
1answer
110 views

(Physics) Finding the angle(s) of launch which hit a target.

Given a coordinate and the launch speed, I need to determine which pair of angle, or angle allows a hit on said coordinate. I know, let's say, the common way, which is using the following equations: ...
3
votes
0answers
525 views

Maximum Jump Distance and Height in Mission Impossible 3 [closed]

In the movie Mission Impossible 3, the main character Ethan Hunt tries to enter a building in Shanghai by swing through the sky, as shown below: The jump consists of 2 sections, the red part, which ...
3
votes
2answers
108 views

Why is the landing footprint an ellipse?

Following the Curiosity landing I noticed that the possible landing site (the so-called 'landing footprint') was demarcated by an ellipse. Here is a picture of it: Now obviously such a footprint ...
2
votes
2answers
103 views

Ball from platform with specific vertex

On earth in a vacuum. You throw a platon from a platform height $h$ and want it to land at point $d$ distant. Note, h is absolutely fixed and d is absolutely fixed. It "must land" at point d, no ...
1
vote
1answer
3k views

how to find the parabola of a flying object [closed]

how can you find the parabola of a flying object without testing it? what variables do you need? I want to calculate the maximum hight and distance using a parabola. Is this possible? Any help will be ...
3
votes
1answer
655 views

Parabolic shape in Bow (not arrow!)

This is what I am thinking for some days. And I think here are some experts who can answer this question. If I bend any stick made with material that uniform density and its shape is cylindrical ...