# movement

1. ### Ball Physic: Predicting Movement Time 2

Hi I have a Ball thats movin at a speed uppwards. It is affected by gravity. I want to be able to determin how long it takes for the Ball to reach a spcific Y position ( located below the Balls initial possition ) ... I got some basic equations fro anothe Thread: Does this mean i can find...
2. ### Ball Physic: Predicting Movement Time

Hi I have a Ball that is affected by 2 forces: - Downward accelleration 'g' - Constant uppward speed 's' This is known: - Force 's' is greated than force 'g' ( initially ) - At what point ( y ) 'g' becomes greater or equal to 's' How can i figure out how long ( time ) it takes untill 'g'...
3. ### Help: move point relative to movement of 3 points

Hi. I don't know if this is the right forum, but I need help quick with a problem. Let's say you have 3 points in 3D-space. p1, p2, p3. They make up a plane. Then you have another 3D point, p4, relative to this plane. p4 can be placed anywhere, outside or inside the plane. Then, the 3 points...
4. ### Is there a name for the front to back movement?

Vertical is up and down. Horizontal is left and right. Is there a name for front to back? Do we just refer to it as depth?
5. ### particle movement, partial differentiation

Can someone explain how to do this question? "A particle moves such that its position at time t is given by r=(t,t2,t3). Find the rate of change of the distance of the particle from the origin." I don't understand the way r is described, does it mean the x,y and z coordinates of r? If so, how...
6. ### Predicting Total Movement after ( X ) Time

Hi I have a moving Object. - There are two general forces affecting the Objects movement: --> The Objects own movement: ( Vi / Ln( D ) ) * ( D^T - 1 ) --> Wind: ( T / 2 ) * ( T - 1 ) * W - The Object only moves in the horizontal direction, left or right, same with Wind. ( Time is Integer, all...
7. ### Predicting Movement Time

Hi I have a moving Ball - The Ball moves at speed V - The Ball has an InitialSpeed V_i - The Ball has a TargetSpeed V_t Every second: - Ball is displaced V number of pixels - V is multiplied by deacceleration D ( D is a number between 0 - 1 ) ... I need an expression, returning how many...
8. ### Predicting Movement Time

Hey I have a moving Ball - The Ball has an InitialSpeed V_i - The Ball has a TargetSpeed V_t Every second: - Ball is displaced V_i number of pixels - V_i is multiplied by deacceleration D ( D is a number between 0 - 1 ) ... I need an expression, returning how many seconds it takes before...
9. ### Modify function from linear to an increasing curve

Hi, I have a little problem with functions and curves. When it comes to statistics, functions and curves I'm a really noob, so I hope this is the right forum. Some background information: I'm developing a game where objects move across the y-axis according to the passed time. These objects are...
10. ### Particle movement: displacement & aver. velocity

A particle moves along a vertical coordinate axis so that its position is given by the function: S(t) = 1/3 t^3 - 3t^2 + 8t - 4. Find displacement during first 6 seconds. Find average velocity during first 6 seconds. A little help? Thanks.
11. ### How to calculate min acceleration between two points of different velocities

Hi all. Start Point A at a velocity of 100mm/sec Finish Point B at a velocity of 40 mm/sec Distance to travel = 300mm Time to do it in = 2 seconds Now obviously we have to apply an excessive acceleration to a "Point C" (between A and B) to achieve the 300mm movement within the 2s time...
12. ### Movement vector for a subsection of the surface of a sphere - spherical polar coords

What I am trying to do seemed so simple at first - assign a movement vector to a large subsection of the surface area of a sphere. The project I'm working on is a (very) simple simulation of tectonic plates. I have a sphere defined in spherical polar coordinates (R, theta (longtitude - 0...
13. ### Sun movement in three dimensional coordinate system

Hello I'm creating simple 3D program for designing house and it involves sun movement (to see the brightness of the building at certain time). As title says, I have three dimensional coordinate system and I have already defined the sun location at the certain time of the day // where angle...
14. ### Upward vertical movement with air drag.

\hat{} Hi, here's the problem: "upward vertical movement with air drag" speed = v; initial speed at t0 = v0; initial height x0 = 0 x= vertical distance travelled force gravity Fg=-m.g force drag Fd=-k.v^2 (k=ct describing air, shape of object,...) F=m.a : --> m.a=-m.g-k.v^2 (a=x'' and...
15. ### Calculating variable flow rate when the scale is subject to random movement

I have an ingredient feeder resting on electronic scale that is transmitting one reading per second to a computer. I would like to calculate the current flow rate of the product as it is being dispensed from the feeder. It is possible for the flow rate to change over time so I would like to...
16. ### basic equation for movement

In The Carrie Diaries by Candace Bushnell, there is an episode during the calculus class: “Carrie,” Mr. Douglas says. “Can you give me the basic equation for movement?” Thank God we learned that equation last year. I rattle it off like a robot: “X to the fifth degree times Y to the tenth...
17. ### Particle Movement through space #3

A particle moves according to a law of motion s = f(t), t >= 0, where t is measured in seconds and s in feet. Find the velocity at time t. What is the velocity after 3 s? When is the particle at rest? When is the particle moving in the positive direction? Find the total distance traveled during...
18. ### Particle movement through space #2

A particle moves according to a law of motion s = f(t), t >= 0, where t is measured in seconds and s in feet. Find the velocity at time t. What is the velocity after 3 s? When is the particle at rest? When is the particle moving in the positive direction? Find the total distance traveled...
19. ### Particle movement through space.

A particle moves according to a law of motion s = f(t), t >= 0, where t is measured in seconds and s in feet. Find the velocity at time t. What is the velocity after 3 s? When is the particle at rest? When is the particle moving in the positive direction? Find the total distance traveled...
20. ### Newtonian Mechanics - the movement of a particles

A particle of mass m which moves along a horizontal straight line with a velocity of v encounters a resistance of av + b(v^3), where a and b are constants. If there is no other force beside the resistance acting on the particle and its initial velocity is U , show that the particle will stop...