• Support PF! Buy your school textbooks, materials and every day products Here!

Implementing wind into projectile calculation.

  • #1

Homework Statement


Calculate distance of a rock thrown at certain angle, velocity and wind speed/direction.

Homework Equations


I'm using this: 2(vi^2)sin(theta)cos(theta)/9.8 to calculate the distance of the throw. How could I implement a wind value and direction into this equation? This is only a 2D simulation, so the wind would only affect the x value.

Thanks for the help.
 

Answers and Replies

  • #2
phinds
Science Advisor
Insights Author
Gold Member
2019 Award
15,912
5,600
Forget about equations at first ... draw a diagram and see what's going on and THEN figure out how to put it into an equation.
 
  • #3
haruspex
Science Advisor
Homework Helper
Insights Author
Gold Member
32,737
5,033
It is not a simple modification to that equation. You need to start with the differential equations of motion (ΣF=ma). In that, you will need to decide how drag affects speed. Drag force = constant x speed2 is usual.

It is not true that wind only affects the horizontal movement. It also slows vertical descent.
 

Related Threads on Implementing wind into projectile calculation.

  • Last Post
Replies
5
Views
5K
Replies
0
Views
2K
Replies
2
Views
2K
  • Last Post
Replies
7
Views
4K
Replies
8
Views
21K
  • Last Post
Replies
1
Views
5K
  • Last Post
Replies
1
Views
1K
Replies
6
Views
1K
  • Last Post
Replies
16
Views
1K
Replies
1
Views
2K
Top