All Questions
Tagged with data-analysis kinematics
17 questions
0
votes
4
answers
107
views
How can I detect when a car makes a turn using velocity vectors and account for speed?
I am trying to detect when a car makes a turn by analyzing its velocity vectors over time. Each velocity vector is represented as:
$$\vec{v_t} = (X_v, Y_v)$$
Currently, I calculate the change in ...
- 3
-2
votes
1
answer
122
views
Why does a graph of radius vs velocity of an object undergoing circular motion have a quadratic slope? [closed]
I'm doing a project with uniform circular motion and I cannot for the life of me understand the conceptual side of the graphs. On a graph of velocity vs radius of a bob undergoing uniform circular ...
- 11
0
votes
0
answers
11
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Wave vector components from 2 column data
if I have 10 data in each column for speed (2D), how to connect those data as wave form?
I need to find the components of wave vector ($k_x, K_y$).
I request any suggestions regarding this.
- 31
1
vote
1
answer
185
views
In a uniformly accelerated motion experiment, the acceleration can be attained from $V_{ave}$ vs. $t/2$ and $x$ vs. $t^2$ graph. How is this possible?
Specifically, in the experiment, we had to release a glider from an inclined plane (that had an angle of inclination of 10 degrees). We had to calculate the time it reaches the final position. We had ...
- 13
21
votes
7
answers
2k
views
Line of Best Fit with or Without Constant Term
Some other physics teachers and I were discussing an AP problem about a potential experiment for measuring $g$ and disagreed on the best way to use a line of best fit to analyze the data.
The ...
- 7,331
1
vote
0
answers
53
views
How can I optimally rotate accelerometer readings so that the integrated velocity ends up correct? [closed]
I attached an accelerometer (with gyro/magnometer) to a curling rock and threw it down the sheet of ice. The accelerometer was not flat, and it did not travel significantly in the $z$ direction. I ...
- 111
0
votes
1
answer
157
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Uncertainty propagation time difference
So for an experiment we gathered time data. It a rolling object, where t2 and t1 are measurements of one whole roll of circumference. We estimated time uncertainty at 5 ms.
So then estimation of ...
- 2,180
0
votes
1
answer
68
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How to find the period of a pendulum knowing only its speed and maximum arc-length?
I am writing a program to give me the period of a pendulum, the program can measure the speed of the pendulum at every 1/60th of a second (Limited by camera frame-rate.) Is it possible to know the ...
0
votes
1
answer
816
views
How to extract velocity and acceleration from $N$-body simulation data?
I have data from an $N$-body simulation and want to do some data analysis. I would like to extract the velocity and acceleration of each particle. The data consists only of the positions of each ...
- 223
0
votes
1
answer
429
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Generating Positive Kinetic Energy (PKE) from car velocity [closed]
PKE have high importance on fuel consummation and Eco-driving.
I have a data frame with 3 columns, Time (each second), Speed(KM/H) in each second, and RPM ,from this data frame I want to calculate ...
1
vote
0
answers
1k
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Graph analysis of accelerometer data
I used my mobile accelerometer sensor to collect data from a moving bike where I held it in my hand in a way that the smartphone sensor +Y axis is in the direction of the moving bike always.
This can ...
- 19
1
vote
5
answers
2k
views
Calculating mean velocity: using time or velocity? [closed]
Background
I have been running tests which involve timing an object moving a certain (fixed) distance, $s$.
Each test has been repeated 3 times, and the 3 times ($t{_{1}}, t{_{2}}, t{_{3}}$) for the ...
- 113
15
votes
8
answers
2k
views
When to average in the lab for indirect measurements?
I am measuring distance and time to calculate the velocity. I repeat the experiment 10 times. What is better, to first calculate the average of distance and time and then the velocity, or to calculate ...
- 322
3
votes
2
answers
3k
views
Best way of calculating average acceleration in lab experiments
I am doing a lab experiment that works as follows.
An object moves along the $x$ axis with an initial acceleration and then moves with a pretty constant velocity that may slightly vary within $20\%$ (...
- 31
2
votes
0
answers
620
views
Free-Fall Lab Help - Getting weird results [closed]
So, I am doing a free-fall lab for my physics class. We got the values and I have the results here(we used a infrared photo-gate). Basically, we have a brass cylinder and a wood cylinder. Each are ...
- 29
3
votes
1
answer
400
views
Galaxy Kinematic Fitting: How to deal with Point Spread Function (PSF)
The past few months I have been studying astronomy and Integral Field Spectroscopy (IFS). What I want to do is to fit a galaxy kinematic model to data (ie: estimate the model parameters that give the ...
- 329
3
votes
1
answer
1k
views
Lab observation correct? As distance decreases, velocity increases, stderr decreases
The experiment goes like this:
Allow a moving cart to move from the top of an incline plane ($x_0$) downwards. The time taken will be recorded by the picket fence (those things you see wired up). ...
- 495