kinematics

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Tag archives for kinematics

Sport Science FTW!

Normally, it isn’t really news when a show doesn’t do anything wrong. I am making an exception for ESPN’s Sport Science. Here is part 2 of Sport Science trying to reproduce Kobe Bryant’s “jumping over a car” stunt. And here is part 1 (although part 2 is the only interesting part). See. I can get…

Apolo Ohno’s Slime Jump

Here is a quick Apolo Ohno quiz. Which one of these pictures is fake? If you picked picture B – you are probably correct. That is a picture of “Apolo” being catapulted into a pool of slime at the Nickelodeon awards show (click on the link to see the video – I don’t think I…

Motion of a Dart in Bloons

I stumbled on this flash game Bloons. The basic idea is that you (the monkey) throw these darts and try to pop some balloons. Well, what is the motion of these darts like? Is it constant acceleration? Time to pull out the free and awesome Tracker Video Analysis. I threw a few shots and captured…

AutoTracker and a landing plane

If you know me, you know I love Tracker Video Analysis. Basically, it is a free-java program that allows you to get position-time data of a moving object from a video. In Tracker version 3.10, there is now the autotracker feature. This will automagically mark the location of an object moving in a video. How…

RP 6: Throwing a fooball, Part II

In part I of this post, I talked about the basics of projectile motion with no air resistance. Also in that post, I showed that (without air resistance) the angle to throw a ball for maximum range is 45 degrees. When throwing a football, there is some air resistance this means that 45 degree is…

One of my students showed me this game, Fantastic Contraption. The basic idea is to use a couple of different “machine” parts to build something that will move an object into a target area. Not a bad game. But what do I do when I look at a game? I think – hey! I wonder…

More Punkin Chunkin Centrifugal Machine

This year’s episode of Punkin Chunkin is coming up (I think tomorrow). Discovery just showed a teaser commercial with the specifications for one team’s machine. If you are not familiar with Punkin Chunkin (World Championship Punkin Chunkin), the basic idea is to project some pumpkins. (note, if you waiting for the Discovery Channel show for…

Everyone knows, or should know how much I like MythBusters. Here is the problem. Below is a picture of Adam analyzing the motion of a an exploding water heater. Actually, I applaud Adam for his creative use of the vernier caliper. Really, it is an example of “making things work”. However, in this case there…

I don’t really know what that title actually means. So, I have been having problems with my PASCO projectile launcher devices. I will just call them launchers (they are really cannons). In my previous post, I looked at the launch speed from a launcher shot horizontally and vertically. The problem was that I was getting…

The last time I looked at this projectile motion lab, I was confused. My different methods for measuring the launch speed of the ball were not even close to being consistent. So, I am bringing out the big guns – video. I made a video of the ball shot both horizontally off the table and…