Straight line Definition and 239 Threads

Homework Statement Karen lives 500 m from school travels to school in straight line. Starts out at time zero at rest and accelereates towards school with an acceleration of 2.0 m/s2 for 10 seconds. she then travels at constant speed for 5 seconds. she then slams on the brakes, coming to...

Homework Statement Determine whether the points lie on straight line A(2, 4, 2) B(3, 7, -2) C(1, 3, 3) Homework Equations The Attempt at a Solution I've looked up at the equation for lines in three dimension, and it appears to be x=x_0+at y=y_0+bt z=z_0+ct i tried to take the x y z for A and...

Homework Statement Okay, I totally do not understand how to derive the electric field made by a dipole or a line or a ring or etc. Homework Equations When finding the electric field, when you make an estimate, saying that the test charge is very far away, it should be similar to kQ/r^2...

Motion in a straight line HELP! Here's my problem... A rock is dropped (from rest) from the top of a 87.5-m-tall building. How far above the ground is the rock 1.2 s before it reaches the ground? ...so far this is what I came up with y=(1/2)gt^2 t=sqrt(2y/g) = sqrt((2*87.5)/9.8) =...

Homework Statement For my A-level homework I have to think whether there are any objects in the universe that move at the same speed in a staight line forever. Homework Equations I am stuck to think of anything - do any exist? The Attempt at a Solution Thanks for the help

Probably an easy question I thought that its easier to do things when you have more time.

If \bold{F}(x,y) = \frac{k(x \bold{i} + y \bold{j})}{x^{2}+y^{2}} find the work done by \bold{F} in moving a unit charge along a straight line segment from (1,0) to (1,1) . So \bold{F}(1,y) = \frac{k(\bold{i} + y \bold{j})}{1 + y^{2}} . Then x = 1, \ y = y . k \int_{0}^{1}...

Hi, Homework Statement One mole of a diatomic ideal gas performs a transformation from an initial state for which the temp. and vol. are respectively 291K and 21000 cc, to a final state in which temp. and vol. are 305K and 12700cc - a straight line in the P,V diagram. Find work performed, and...

Homework Statement Earthquakes produce several types of shock waves. The most well known are the P-waves (primary or pressure) and the S-waves (secondary or shear). In the Earth's crust, the P-waves travel at around 6.5km/s, while the S-waves move at about 3.5km/s. The actual speeds vary...

Is there any way, in Mathematica, I can plot a straight line in a 3D plot environment? For example: Plot3D[{{y = 1 - x, z = y - 1}}, {x, -5, 5}, {y, -5, 5}] plots two surfaces, not their intersection (which is a straight line). Thank you in advance.

Homework Statement Starting from rest, a particle confined to move along a straight line is accelerated at a rate of 5 m/s^2. Homework Equations Does this mean that each second the particle's speed increases by 5m/s^2, or does it's speed stay at 5 m/s^2 and travels only 5 meters per second?

Hi My thought might be a bit weird or maybe childish, but I can not find anything to object it or to prove that it is wrong. As a basic definition of a straight line that it is an infinite number of points that are connected together. Regardless the length of that straight line, it consists...

Hello, I have a problem I need to solve quickly... basically, I have a set of points in 3D space that make up a straight segment of a nanotube, and I want to "bend" the points along a circle (to simulate what happens if you bend a nanotube into a torus). I basically want to do to all of my...

[Solved]Two planes->x+2y-2z=2 & 2x-3y+6z=3 intersect in straight line l Homework Statement Hi.I've two planes' equation x+2y-2z=2 & 2x-3y+6z=3.The planes intersect in the straight line l. The question:Find a vector equation for the line l. Homework Equations a.n=0 if they're both...

I've calculated a straight line mechanism for a 15cm straight line... 39% straightness over the cycle... lengths came out to L1 = 10.35cm L2 = 4.14cm L3 = 13.445 = L4 these values should give a 15cm line... so I went to go build the thing.. all the distances from each hole on...

I talked to an astronomy student recently, and he told me that if I travel out from Earth in a straight line, I will finally return to earth. Is this true?

Homework Statement I'm taking a grade 11 physics correspondence course and would like to know if I am on the right track. At the instant a tracffic light turns green, a car starts from rest and acccelerates uniformly at a rate of 4.0m/s. At the same instant, a truck traveling with a...

Homework Statement Find the equations of two lines through A. one parallel and the other perpendicular to the line defined by the given equation. A(-1,1),y=1 Homework Equations Parallel lines y = mx + b then solve for b Perpendicular y = -mx + b then solve for b The Attempt at a...

ok i stuck guys here is the question. Consideer n infinitely long straight lines. none are parrelel and no three are lines have a common intersection. show that for N>=1, the lines divide the plane into (n^2+n+2)/2. kay I am stuck kay i now base case works. I know that k=(k^2+k+2)/2...

hi I am new to this and i have a problem that I am stumped on. Two trains, one traveling at 100km/h and the other at 128km/h, are headed towards one aanother along a straight level track. When the trains are 1.2km apart, each engineer sees the other train and applies the brakes. Both trains...

I’m having difficulty with an assignment for my Physics class. Here’s the question: “Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance D_{A} beyond the starting line at t = 0. The starting line is at x = 0...

Hello, I have a set of data points to plot as graph. X axis: Year Y axis: Number of deaths due to cancer. The graph is of parabolic shape opening to the right. Following is my question: I have been asked to plot only the first and last points and connect those points with a...

Hey I’m given a problem in which I need to calculate the values for a, b, c where a>0 where the equation for a straight line ax+by-c=0 and this line passes through then points (0,7) and (-2,0). Here’s what I have got: ax+by-c=0 by=c-ax therefore when the line crosses at (-2,0) this...

area under a straight line the calculus way, the book gets by means of the regular definit integral method as oppossed to the fundamtenal theorem of calculus method, S of n = 2deltaX+2deltaX+2(deltaX)^2+2deltaX+2x2(deltaX)^2+ . . . +2deltaX+2(n-1)(deltaX)^2 from the general terms arrived...

I was wondering if someone could check my work and see if its correct. An object of mass 100.00kg moves in a straight line under the influence of a force given by F(t)=(120 N/s)t+4000N At t=0 it is moving at 0 m/s. Determine its speed at t=5.00 s What i did is this. I plugged 5s into the...

I am having a problem solving this: A ball is thrown straight up from the edge of a 20m tall building (ignore air resistance). One second later a second ball is thrown. What must be the initial velocity of the second ball in order for both of them to hit the ground at the same time. Knowns...

A particle of mass m moves in a straight line subject only to a resistive force of magnitute a+bv, when the particle's speed is v, where a and b positive constants. If the particle was set moving with initial speed u, obtain formulae for the time taken for it to come to rest and for the distance...

We all know that at any instant of the line: m = dy/dx integrating on both sides: y = mx + c So, how do we know that "c" is the intercept cut on the Y-axis?

Question In the figure attached, what is the magnitude of the net gravitational force exerted on the 0.100-kg uniform sphere by the other two uniform spheres? The centers of all three spheres are on the same line. So, I'm thinking F_1=(Gm_1m_2/r_1^2) and F_2=Gm_1m_3/r_2^2...

Motion along a Straight Line problem !PLEASE HELP! An alert hiker sees a boulder fall from the top of a distant cliff and notes that it takes 1.30 s for the boulder to fall the last third of the way to the ground. You may ignore air resistance. I have calculated the last 1/3 of the distance...

Question on "Motion along a straight line" [edit: finally got the first one already so I erased it ...] Hey guys, I really appreciate this forum and all that are taking the time to help out. I wish to be part of this community and help out others in the future as well. I had a question on...

this was posted before, but I was told to put it in this section... Light always wants to travel in a straight line, however, the space is curved around massive objects such as black holes, so it would seem as if the light was being bent as it traveled around the black hole. The space around...

What would you call the scale on the Y axis that would plot a sine or cosine wave as a straight lined saw tooth pattern? Is such a graphing style in use and does it have a name? RB

I am not sure what the thing is actually called, but let me see if I can describe it. It is one of those products advertised on tv, that you put on a wall and it shoots a laser beam all along the surface parallel with the ground. The problem I can't figure out is, some of them claim it can go...

How do you plot a straight line, parallell to the y-axis in gnuplot? Something like: x = 20 ?

can u pleez help me w/ the rest of the problem of 10 m/s for 3 seconds and then travels for 2 seconds at a constant speed of 5 meters per second in the same direction. Calculate the total distance traveled. Thanks!

Hi, Please Can You Help Me To Understand How To Find The Vertex Of A Quadratic Equation (x,y Coordinates) Just By Looking At The Equation ? Eg What Is The Vertex Of Y=3x^2+4x+7 ? __________________________________________________ Also, How Do I Transform A Straight Line Graph...

What characteristics about a straight line can you determine from the slope-intercept form of its equation? Explain how to find these characteristics from the equation. Okay, so I know the equation, but what characteristics am I supposed to be able to determine from a straight line. My...

could a vector be also a curved line not only a straight line?