Displacement Definition and 999 Threads

Homework Statement A lost dog travels 30 degrees south of west for 450m. He ten smells some food and sprints at 20 degrees east of north for 600m. a) draw each vector. Label magnitude and theta. b) calculate the vector components c) calculate the magnitude of the dog's displacement...

Homework Statement The minute hand on a watch is 2.0cm in length. What is the displacement vector of the tip of the minute hand: a. from 8:00 to 8:20 b. From 8:00 to 9:00 Homework Equations The Attempt at a Solution I keep getting that the displacement is 1.8,2.8, but the program...

A dolphin leaps out of the water at an angle of 22.3 ° above the horizontal. The horizontal component of the dolphin's velocity is 8.53 m/s. Find the magnitude of the vertical component of the velocity. I'm not getting the right ans. Any help?

Lets say I had these two graphs: How would I find distance traveled, displacement, speed and velocity from these graphs? I would appreciate it if you could show your work. Thanks in advance.

Homework Statement Use the component method to add the following displacement vectors. D1= 25 m [N 30 W], D2= 30 m [N 40 E], D3= 35 m [S 25 W] Homework Equations I know all of the equations for vx, vy and the five equations. I also know sin, cos, tan and velocity, displacement...

A particle undergoes three displacements. The first has a magnitude of 15m and makes and angle of 35 degrees with the positive x axis. The second has a magnitude of 7m and makes an angle of 163 degrees with the positive x-axis. After the third displacement the particle returns to its initial...

1. A hiker makes four straight line walks A. 15km at 48 degrees B. 27km at 134 degrees C. 28km at 193 degrees D. 14 km at 228 degrees in random directions and lengths starting at position (41km, 41km). How far from the starting point is the hiker? All angles measured in a...

Homework Statement This probably seems really obvious but what formula do you use to find velocity with conservation of energy? Once you find the velocity, is it the velocity of the object at the bottom of the height? Homework Equations This is what I'm not sure about. Is it mgh=0.5mv^2?

Scientific error expected in displacement vs time graph and velocity vs time graph Homework Statement When I used a sensor to measure my movements of walking, during the graph of displacement vs time, I received a slope of -0.742 meters/second, and on the velocity vs time graph the mean I...

Homework Statement Hello, I have a homework question that I'm having difficulty with, it is: A car travels due east (bearing 90) from point A for 6km to point B and then North-west (bearing 315) for 4.0km to point C. By constructing a vector diagram, or otherwise, find the resultant...

Homework Statement I just want to know how you determine the acceleration on a velocity vs. time graph and how to determine the velocity on a displacement vs. time graph. Homework Equations The Attempt at a Solution

Homework Statement I can't figure out part two to a problem. The first part asked us to find the displacement, but I'll let you read for yourselves: Part 1: A cyclist maintains a constant velocity of 5.3 m/s headed away from point A. At some initial time, the cyclist is 259 m from point...

Homework Statement A catapult fires at an angle of 40.02 and has an initial velocity of 5.463. Find the vertical displacement at t=.38 seconds. I know the following from the problem and logic vo=5.463 t=.3824 g=9.8 angle=40.02 I calcuated the following voy=vosin40.02 voy=3.5133 Homework...

Homework Statement Find the (a) x, (b) y, and (c) z components of the sum of the displacements and whose components (in meters, m) along the three axes are cx = 7.9, cy = -4.0, cz = -6.2; dx = 4.5, dy = -1.5, dz = 3.3. Homework Equations I don't know. The Attempt at a Solution No idea how...

Homework Statement A stone is catapulted at time t = 0, with an initial velocity of magnitude 20.5 m/s and at an angle of 41.4° above the horizontal. What are the magnitudes of the (a) horizontal and (b) vertical components of its displacement from the catapult site at t = 1.16 s? Repeat for...

Homework Statement A 2kg block & 3kg block (left & right, respectively) are on a horizontal frictionless surface connected by a spring with K=140 N/m. A 15N force is applied to the 3kg block towards the right. How much does the spring stretch from its equilibrium length? Homework...

I had a small cannon on a desk where the projectile was shot out at 1.08 meters above the floor. The projectile's time taken to hit the floor was 0.452 seconds. The cannon is set to 0 degrees above horizontal. The horizontal distance traveled is 2.3 meters. Acceleration is gravity or -9.81...

Homework Statement A boat travels West a distance of 200m, then North 400m, and finally 100m South of East at 30 degrees. What is the net displacement. Homework Equations none The Attempt at a Solution Many attempts none make sense...lol

Three displacement vectors of a croquet ball are shown in the figure, where || = 10.0 units, || = 35.0 units, and || = 10.0 units. (a) Find the resultant in unit-vector notation. (b) Find the magnitude and direction of the resultant displacement. For part a, I broke each down...

Homework Statement A basketball player runs down the court, following the path indicated by the vectors A,B, and C in the figure. The magnitudes of these three vectors are 10, 20 and 7 m . Assume the positive x-axis is directed to the right. There is a 45degree angle outside of where A...

Homework Statement Two basketball players are essentially equal in all respects. (They are the same height, they jump with the same initial velocity, etc.) In particular, by jumping they can raise their centers of mass the same vertical distance, H (called their "vertical leap"). The first...

1. What is the displacement between t= 0 s and t= 7 s?The "area' under the curve, between the two times is the displacement. The "area" is the area enclosed by the curve and the time axis (v=0 line). Those parts of the curve with negative velocity contribute negative area and those with positive...

A woman walks 143m in the direction 55° east of north, then 178m directly east. Find the magnitude of the displacement vector. Answer: 306m Relevant equations: I will use vA as a shorthand to represent vector A and ||vA|| to represent the magnitude. Ax = ||vA||cos(theta) Ay =...

Homework Statement A record of travel along a straight path is as follows: (a) Start from rest with constant acceleration of 3.95 m/s 2 for 16.5 s; (b) Constant velocity of 65.175 m/s for the next 0.789 min; (c) Constant negative acceleration of −10.4 m/s 2 for 3.52 s. What was the total...

Homework Statement A runner completes 6 1/2 laps around a 400m track during 12min reun test. What is the runners displacement at the end of the 12 min? Homework Equations The Attempt at a Solution Well the distance covered is 2.6km or 2600m in 720s, avg speed = 3.61m/s So I...

Homework Statement The position of a particle moving along the x-axis depends on time as x(t) = 100 t^2 - 8 t^3 where x is in m and t in s. At what time does the particle reach its maximum positive x position? What is the length of the path covered by the particle between t = 0.0000 s and...

Homework Statement The minute hand on a watch is 2.0cm in length. What is the displacement vector of the tip of the minute hand from 8:00 am to 8:20 am? It wants it in x and y components. Homework Equations I found this equation online- i(L sin 2pi(T/12)) + j ((L cos 2pi (T/12))...

Hi, I am reading about how the displacement of a wave can be dependent on both time and position. They use first as an example wave pulses traveling down a rope: I understand how the time will have an effect: the points on the rope oscillate up and down, therefore, at different moments we will...

why is angular displacement considered an axial vector only for small values?

Hey I am kinda new here. :D please help me with this. it's really easy but I can't answer it. HAHAHA a coin is thrown down into a well with an initial speed of 3m/s. The coin hits the bottom 2 seconds later. 1. How deep is the well? 2. What is the coin's speed as it hits the ground...

Homework Statement In wandering, a grizzly bear makes a displacement of 1563m due west, followed by a displacement of 3348m in a direction 32 degrees NW. What are the (a) the magnitude and (b) the direction of the displacement needed for the bear to return to its starting point? Specify the...

Hello, I am a new user both in Ansys and in the forum and I am sorry if my question is silly, but I cannot find the solution by myself. I am using Ansys Workbench v.12 static structural in order to find the displacement of various parts of a robotic arm, that are caused by different loads...

Homework Statement A cap on a steel pin has a mass of m=500g and the pin has an angle of 50 degrees from the horizontal plane. The kinetic friction coefficient between the steel pin and the cap that glides down is uk=0,1. There is a spring at the bottom of the steel pin with spring konstant...

Considering simple projectile motion, would the effect of air resistance cause the angle for maximum horizontal displacement to change? Would the maximum angle then be greater or less than 45 degrees? Just a conceptual question, don't really need equations (though wouldn't mind either).

Homework Statement I'm having trouble understanding the relationship between pressure, speed, and displacement to answer the following question correctly: While you are stopped at an intersection turn lane, a large truck zooms by, just a few feet from your car. As the truck passes, your car...

I have been going through my equations and writing them up on the computer so I can refer to that when needed and have go to angular acceleration, velocity and displacement equations yet I don't have very many equations for those topics and I wondered if anyone had some equations for finding...

A speaker is generating waves in a gas that is closed in a tube. The tubes closed end is at x=0 and the speaker is at x=1. The motion of the membrane is given by s=s_0 \cdot sin(\omega t) How does the particle displacement vary with x and t? The wavelength is \lambdaI do not know how to solve...

Homework Statement Determine the displacement of this particle from t=1s to t=3s r=-(5,0m/s)t i + (10,0m/s^2)t^2 j + (7,0m -(2,0m/s^3)t^3) k Homework Equations The Attempt at a Solution I don't have an idea how to do this if I should to it by replacing t by 1 and then...

When I was doing my assignment, I need to proof the Wien's Law. The question given frequency dependent energy density function. So differentiate it respect to frequency v. Equate it with zero, and solve. i solved the value a=2.82144 = hv/KT=hc/(lambda)KT, i cannot get a correct value for the...

I have this example from my physics books which says: If a skater pushes against the wall and the skater moves, the wall does no work and the motion of the skater only results from the internal work of the skater. It also says that the wall does no work because there is no motion of its point...

Homework Statement My question is what is the displacement of a spring if the spring is stretched by two forces, each acting on an end of it? I've looked on the internet but I've only found examples where the spring is attached to a ceiling. Are there two restoring forces acting from...

I am confused about an electron ( or any negative charge) moving in a uniform E field. If the electron moves in the opposite direction of the electric field, and the E field points in the direction of greatest decrease in potential, then it seems like the electron is moving in the direction of...

Dear all, in self diffusion theory you can see in different books, different definitions of the mean square displacement: <r(t)^2> = \frac{1}{N} \int d\vec{r} \ \vec{r}(t)^2 c( \vec{r} ,t) where c(r,t) is the particle concentration and N the number of particles. or <r(t)^2> =...

Hi, I just learned my first equation today in SHM: x = xo cos (ω * t) Firstly, is it ok if I change the "x =" part for a "y="? I get a bit confused since, from what I understand, we want to find the vertical distance from the x-axis and that would be the y output of a function. (x makes...

Homework Statement I know this is basic but I'm stumped Homework Equations a runner runs 6.5 laps around a 400m track, what's the displacement. I thought it would be 200m but the answer provided says 160m and I just can't work out how to get to this answer The Attempt at a Solution

Hello I want to measure the lateral acceleration at the center of gravity of a vehicle. I cannot place the accelerometer here since I cannot mount it properly so I have placed it 75 cm to the left of the CG. The longitudinal and and vertical placement is approximately correct. It there som...

Homework Statement At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.2 m/s2. At the same instant a truck, traveling with a constant speed of 8.6 m/s, overtakes and passes the automobile. (a) How far beyond the traffic signal will the...

[FONT="Comic Sans MS"][SIZE="3"]A mass of 0.1 kg connected to a spring with a spring constant 10 N/M oscillates horizontally on frictionless table. The speed of the mass is 3.0 m/s when the displacement is 0.2 m form its equilibrium position. What is the maximum displacement from equilibrium...

Homework Statement A particle has an initial velocity of 9m/s due east and a constant acceleration of 2 m/s2 due west. The distance covered by the particle in the fifth second of its motion is? The Attempt at a Solution Using the formula for the displacement in the nth second, Sn = u...

Homework Statement The figure attached shows the meter used to study the motion yB = bsinωt. The motion of the mass relative to the frame is recorded on the drum. If l1= 360 mm, l2= 480 mm, l3= 600 mm, m = 0.9 kg, c = 1.4 Ns/m and ω = 10 rad/s, Determine the range of the spring...