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David Wirth
เข้าร่วมเมื่อ 28 ก.พ. 2012
A place to learn more about physics.
Velocity from a position -vs- time graph
This video shows how to find the velocity -vs- time graph from a position -vs- time graph using Vernier Video Analysis
มุมมอง: 117
วีดีโอ
Vernier Video Analysis
มุมมอง 807 หลายเดือนก่อน
Basic Introduction to Vernier Video Analysis: how to create points, calibrate the units and find a model for the data.
F = ma, Part 2
มุมมอง 919 หลายเดือนก่อน
More applications of Newtons Second Law of Motion. Problems include a suitcase, connected blocks, inclined plane and a Modified Atwood's Machine. Good Stuff! Newton's Second Law, Forces, acceleration, force diagrams
F = ma
มุมมอง 13010 หลายเดือนก่อน
Intro to problem solving with Newton's Second Law of Motion. Three problems are demonstrated: skydiving, elevators, inclined planes.
Physics - Angular Momentum
มุมมอง 594 ปีที่แล้ว
Basic concepts and applications of Angular Momentum in Physics
Solving Ballistic Energy Problems in Physics
มุมมอง 544 ปีที่แล้ว
How to solve the famous ballistic energy problem in physics. Momentum, Energy, Physics, Phun
Solving Physics Problems with Rotational Energy and Rotational Dynamics
มุมมอง 464 ปีที่แล้ว
This video shoes two different ways to solve the same problem: Energy and Torque. Physics, Torque, Energy, Rotational Acceleration, Fun.
Physics - Waves - frequency and wavelength
มุมมอง 554 ปีที่แล้ว
A short video on the relationship between frequency and wavelength for waves of all types.
Making (taping) lines for basketball court
มุมมอง 230K8 ปีที่แล้ว
This is our cheap solution for taping the three point line on a basketball court.
Projectile Motion - derivation of horizontal range
มุมมอง 6K9 ปีที่แล้ว
The derivation of the horizontal range and maximum height of a projectile launched with a given velocity at a given angle.
Kinematics Problem Solving on PHET, Part 3
มุมมอง 1169 ปีที่แล้ว
Students predict the motion graphs of a person walking with constant velocity and then compare their graphs to the simulation program on PHET.
Kinematic Problem Solving on PHET, Part 2
มุมมอง 929 ปีที่แล้ว
Students predict the motion graphs of a kinematics problem and use the simulation on PHET to check their results.
Kinematics problem solving on PHET, Part 1
มุมมอง 2789 ปีที่แล้ว
Students predict the motion of a kinematics problem with position, velocity and acceleration graphs. The students then compare their results by using the simulation on the PHET website hosted by the University of Colorado.
thats clever. THX
How did you tape the curve?
He tapes the area where the carpet cutter blade is going to travel. Then the cutter cuts the tape and he peels it away. He mentions he does it twice, 2 inches apart.
Clever
At this point just attach 2inch paint roller instead of that knife...
Did you find that your line paint bled under the tape at all? It did you do something to seal the tape lines to prevent bleeding?
Attach a durable string or flexible wire to a screwdriver. Have one person hold the screwdriver underneath the hoop while another person marks the line with the taut string/wire.
Yes... A Durable string works quiet well. That's a Lot of 2x4's. Lol
God bless
Ty
Hi, what kind of tape did you use? Thank you
That looked like masking tape
painters tape
What string do you use that stretches at 23'?? I use my snap line to trace out the 3 pt. line and then use a guy (me) who is a professional and we paint the line tracing the marks. The center of the hoop is where the beginning of the radius is. The last 3' towards the end line is straight. All that tape and cutting is wasting a lot of time. Mark it, snap the end lines and stripe the line. Use a small tip and go for it!!
Very well said! I came here to say the same thing
Snap the end lines? As a very novice painter seems like the tape is alot but I feel more comfortable doing it this way.
Make a video to show us next time 👍
I need to do this, 4 years later
I need to do this 8 years later.
@@yankees6970i need to do this 8 years 2 weeks later for a client, how did your project go? Any tips?
Okay, this is epic.
ghetto*
Don't Worry Bro I Get You To 100 Subs
thank you
why not just use pencils to draw the lines on the end instead of cutting the tape?
precisionfloormarking.com
bro, you could just use wire
Kenneth G no
For the compass.
How far away from the basket is the 3 point line where do u start to measure it
From the board is 18 ft
Look it up
19 9 from the middle of the basket
22ft In the nba
Depends on if you want nba, college, or high school measurements
How far away from the baseline is the 3pt arc
we did 3 ft.
3 ft to sideline, 19-9 to baseline.
David Wirth actually, 3ft from out of bounds to the front of the back board. Then 18in to the center of the rim. Then it is 19ft9in to standard high school 3pt arc. I find it easier to measure out from the backboard for the free throw line the 15ft, then add the 6ft radius at the top of the key. Then measure back the 19ft9in from there (amounts to the same thing).
Jessie M no
What are the deminsion for the 3 point line?
19 ft 9 inch arc
Thank you. You guys did a great job...Vids like this is a big help.
I find 3 point lines vary depending what league, country and level you are in. There is no chart online to cover all the different court dimensions.
You definitely have to make a choice. We chose American High School to fit the needs of my son.
RC Street Drift this is certainly true. In USA high school is 19ft9i, NCAA is 20ft9in and NBA is 23ft9in. All from the center of the rim. What is found internationally is outside my knowledge base.
Hi Dave, thanks for the vid With the 3 point line, how do u tape before u cut? would it work with a pencil attached to the end of the compass?
Hello, I used the giant compass (without the knife)to place a wide swath of tape in the area that I wanted. A pencil could work, but the purpose of the tape is to provide a smooth border for painting. This provided a really clean edge to my 3 point arc.
Just cover the general area with tape. My first attempt was a pencil on a string and I was unsuccessful. There was too much play in the string.
Health for a Future no
are there any other way to avoid drilling the hole on the floor?
great question, I'm sure you could just hold a phillips screwdriver down hard for the pivot point but I didnt want to take the chance. I drilled a small hole with masonary bit. You can fill the hole in or just leave it. I left it and dont notice it. It fills in natually with sand and dirt.
aiman hakim no
yeah I am planning to use a screwdriver with a wire and marking crayon. two person job though.
buy the stencil , who has this time .
Thanks for the comment. I actually looked into stencils at first but didn't want to pay the $200 - $300 for a decent set. This method cost less than $10 and surprisingly didn't take as long as you might think.
Who has this time ? 🤣 you an astronaut? Dont have even 1 Saturday or 2 hours available? Need to manage your time better. I save the world and still run my business
DogEdog no
@@kenn12588 no
can you please tell me that why do we use derivative of something with respect to something to find the maximum quantity of that particular thing?
Second!
First!
First!
First!
First!