Inertia Demo @ Home

Inertia Demo @ Home Project

By Anne Margaret Boswell

Description: I demonstrated inertia with a toy car. I gave a toy car, which was resting on my kitchen counter top, a push. Then I picked up the car after a few seconds in order to demonstrate inertia. The wheels stayed in motion.

Adult explanation: The wheels kept moving once Anne Margaret picked up the toy car because the wheels were already initially moving, so it would take a greater force to make the wheels stop moving, rather than merely picking up the toy car.

My own explanation: This experiment demonstrates the concept of inertia, which says that objects at rest tend to stay at rest, and objects in motion tend to stay in that motion. The toy car began rolling fast in motion with a constant acceleration. However, when I picked up the toy car, the wheels did not stop moving, because they were trying to resist change. The toy car was in motion so the wheels stayed in that motion, even though the wheels were no longer touching the counter top.

1. Stack the books on the table. 2. Hit one in the middle and watch the books fall the in place. 3. Moms explantation: The middle book was the only one that came out of the pile because it is the only one that has force on it. 4. What I had to say: My mom was right on spot because the Newtons first law pertains to this. and this law was see right in my demonstration.

Danyal T inertia demo p.3

1. Stack quarter coins one above the other on a flat surface.

 

2.Hit one of the bottom coins with the edge of the spatula.

 

My moms explanation:  Only the bottom coin slid out because when you hit it with the spatula fast enough you are only applying force to the coin you hit.  This causes the coin to slide out and the rest remain unaffected because objects in rest stay in rest if not acted on.

 

My Critique: This is a good explanation because she used Newtons first law and this law directly applies to this demonstration. I would have mentioned coins are just sitting one above the other and when one of them is hit sideways, the ones in immediate vicinity resist that motion and the stack slide down under effect of gravity. But otherwise it is a pretty solid explanation.

 

 

 

Phaulty physics in philm - Banipal Georges

This video of Garry's mod, a sandbox physics game, shows incorrect physics. At about 0:07, the building explodes, however, some of the pieces stay where they are, attached to nothing, and just floating in mid-air. According to free fall and projectile motion, these pieces should have became projectiles from the force of the explosion and flew away, but they didn't.

Within the first few minutes Donald Duck is climbing up the tree with breaks the law of physics. Due to gravity he can not walk up the tree solely with metal rods in his feet. Donald Duck falls from the top of the tree, then climbs up again and falls because of the chipmunks. This al breaks physic laws because due to gravity they would not be able to walk up trees cut the tree off. Donald gets upset and begins to cut down the tree and the chipmunks hold up the entire tree by themselves. This happens at 4:00 minutes. This is not acceptable because once a tree is falling it can not fly back up because of the acceleration of 0m/s/s. It can not fall and go back up all by itself due to the laws of physics. Maggie Cunningham

Phaulty Physics in Philm

http://www.youtube.com/watch?v=e-P29lveh10

This looney tunes video defies the laws of physics, espically the laws of gravity and speed. In the first 20 seconds the characters try to chop off the branch in which the other animal is sitting on. However, when one chops off theother animal's branch, that animal immedietly re appears on a new branch, and it is impossible to have that much speed in an amount of about 3 seconds. Also, at 26 seconds the wolf chops off the land where the bear is, however, the bear does not fall. He floats in the air, which defies the law of gravity. Gravity would pull the bear and the land to fall towards the center of the earth. This does not happen, this is bad physics!!

Boswell

This presents projectile motion because it reaches a peak of 0 m/s/s and has a horizontal and vertical velocity and displacement. It also has acceleration of gravity. The vertical accleration has to be 10 m/s/s. Anne Margaret and Maggie

Bart Krupa/Peter Gliwa

     This is a video of projectile motion. This projectile illustrates projectile motion because it has a constant horizontal acceleration, and it also has a vertical acceleration of 10 m/s/s.

Projectile Motion Photo Project

BEN AND ROSE's picture vividly displays the projectile of motion because it shows that as the water falls and gains speed, it starts to separate from the rest of the stream. As a result, the water later clumps into smaller droplets while it gets closer to the bottom of the sink.

<iframe width="560" height="315" src="http://www.youtube.com/embed/_d8ROhH3_vs" frameborder="0" allowfullscreen></iframe>

In the cartoon Wile E. coyote runs of a cliff to escape a truck and runs on air until he realizes he is on air.  Then he plummets to the ground.  In real life he would have just fallen immedietly because the second he left the cliff he became a free falling object and is acted uppon by gravity.

DANYAL TANWEER

http://www.youtube.com/watch?v=ZQaBYT4MxWU

In this scene one of the guards is shot with a shotgun and thrown back onto the ground. It is impossible for them him get thrown back so far. For every action there is an equal or opposite reaction. If the guy who got shot got thrown back so far shouldn’t the shooter? The shooter doesn’t get thrown back at all. That is why this is a bad example of proper physics. Jack specht

This presents projectile motion because it reaches a peak and has a horizontal and vertical velocity and displacement. It also has acceleration of gravity. -Hope and Frankie

projectile motion photo project

this represents horizontal motion
jack s, daniel t

Lab Tutorial

Downward acceleration, or a positive.

Downward, positive acceleration.

The object that we used was a coffee filter. We used this because it is and easy object to see and use for this particular project. When we dropped it, it started slow and gradually increased a little bit untill it hit the ground.

To create this photo, we changed the settings on the camera so we could get a longer shot to catch the object slowly falling. We also chaged the shot speed so we could see it fall.

Hope, Frankie, and Maggie

motion diagram picture

The volleyball has a negative acceleration. 

By Jack S and Danyal T

Creating Your First Blog Post

Once you have logged in for the first time and accepted your invitation to be a contributing member (i.e., author) of this blog, your next task is to create your first blog post. For any extension project that involves posting a video, photo, or reflection to the blog, you will need to create and publish a "post." A post is simply a short article that appears on our class blog.

Once more, Mr. Rylander (a Physics Studies teacher) has put together a very useful instructional video on how to create your first post. The video is shown below.

Once you have created and published your post, it should be visible on the blog.

Becoming a Member of the Blog

Your first task as a member of the blog (and the class) is to accept the invitation to be an author. Mr. Rylander, another Physics Studies teacher, has put together a wonderful video that steps students through the task of accepting the invitation and logging in for the first time. The video is shown below.

Once you have completed this first task, you will be ready to create your first blog post.