For the next two weeks, chew on this thought and post your responses here. You've finished up your unit on force and motion, and you know more than you probably think. Now knowing that forces, energy, and motion is all around us, where do you see it around town. Describe things around town that demonstrate how forces transmit energy to cause motion. In each of your entries you should include energy, forces, and motion, and be sure to tell us where in Alpine we can see what you are talking about. Need help? Let me know.
Jill Kleine
12/17/2011 08:17:18 am
When I'm driving around town with my parents, I see lots of people riding bicycles. Bicycles uses energy, force and motion all at once. For example, you use your own energy to make the bike go by pedaling. Force is used when they are riding uphill and down hill. When riding uphill, they need to use the force of gravity to make it up the hill. When going down hill you are going much faster so your body has to work against the air resistance pushing against your body. Motion is used to male the bike go. The pedals help it go. Like in Newtons first law, when you keep pedaling, the bike stays in motion and when you stop, the bike stays at rest if your going at a constant rate.
Danielle Gomez
12/18/2011 10:14:58 am
about every day you see runners around ALPINE, they use there legs to force themselves up the hills and in newtons 3rd law for every action there is an opposite reaction when they step forward you put all your weight on the back leg so the reaction makes your body go up a bit!1 also it uses motion as your jogging because your moving at a constant speed and it takes up lots of energy to run... sooo.. running would be my everyday accurance p.s air resistance hits your face as your running!
Nathan Ebert
12/20/2011 02:00:12 am
While I was in Coronado for a soccer tournament there were some guys playing football on the beach.Newton`s 3rd law says that for every action there is an equal but opposite reaction. So while they were running, the force of their foot coming off the sand kicked some of it up in the process.
Oksana Wren
12/20/2011 05:38:14 am
Yesterday I saw some guys on motorcycles, since the motorcycles are ran on their motors that's where they get their energy to accelerate, they use energy,motion,and forcee:)
John C. Hirsch
12/20/2011 05:38:48 am
In the construction sites down the roads of Alpine, when they were using the large hammer like machiney, gravity forced the heavy hammer down, also the hydrolic arms forced the hammer down. The thrust from hydrolic arms gained the hammers velocity and force until it hit the ground. One of the forces slowing the hammer was the friction of the tube it was sliding down, and the air resistance as it cut downward. Newton's 3rd law helps my theroy by stating, for every action there is an equal and opposite recation, so once the hammer collided with the ground it bounced and the rocks below were crushed or cracked.
Mr. Casey
12/21/2011 09:43:07 pm
In Jill's case the energy is transmitted when the bike rider forces their foot downward on the pedal, the pedal them goes down and transfers the energy to the cranks, which turns the gear and the wheel. Energy can't just appear or disappear, so where does the energy go?
Cameron Cody
12/22/2011 06:09:24 am
There are many examples of force and motion around Alpine, Barona to be precise. Deep in the heart of Barona there is the popular MX track Barona oaks. All of the riders there are experiencing many different examples of force and motion. Friction is perhaps the most common of all, as a rider jumps the dirt bike the front suspension fork gets compressed. To do this the fork tube, or stanchion slides up, thus creating friction. Another popular example would be the ruts. Ruts are the small trenches formed on certain parts of the track. These happen when a rider lets out the clutch, thus spinning the tire. Then the tire spits out dirt, leaving a rut. This relates to newton's third law, for every action there is an equal and opposite reaction.<(-_-)>
marivy martinez
12/22/2011 07:00:37 am
Dito with Daneille G. I too see runners running they are using thrust and speed when they are moving their legs which is force and motion
Danielle Gomez
12/26/2011 07:40:37 am
well in Mr.Casey's comment I'm pretty sure that the energy keeps circulating around and NOT DISAPPEARING!!:):)
Hannah Pulley
12/29/2011 06:03:51 am
Adding to John's theory, the construction in Alpine plays a part on this subject. For example, when the tractor claw goes and impacts the black top it causes force upon the ground. Also, when the tractor claw is being moved up & down it causes air resistance. Gravity also plays a part because the equipment is staying on the ground. Although the equipment can defy gravity by keeping the claw up in the air.
Russell Sandoval
12/30/2011 06:52:51 am
Force is when you see bike cyclest forcing the pedal around and motion by their legs pushing them forward
Austin Prather
1/2/2012 11:34:05 am
when you ride a longboard down a hill, you use you foot to kick off the ground creating force witch couses the board to move indicating motion.Gravity aplys in this beuz with out it you woulf float up in the air. (-,...,-)
Jessica Leasure
1/3/2012 12:41:28 pm
While walking around campus I noticed over the break people broke a lot of bones. I would say the force of the persons body part of object applied a motion to break the bone.
Chase Ozbirn
1/4/2012 11:12:31 am
I see it everyday going to school, In a car the car must thrust itself forward pushing against air resistance and if im late the faster i go there is more air resistance :)
Erica Wilson
1/22/2012 10:05:17 am
Well this is kinda late:)... but something that i do often that shows alot of force is when i go to dance class and we dance it takes alot of force and air resistance occurs with every move we do. :) Comments are closed.
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