Force and Motion

2/29/2012

Your whole life you have been living around many forces, and you have constantly seen things in motion. You have even been the force that caused a lot of the things around you to move. Friction is a force that slows things down. For example, if you slide a paper across a flat. smooth surface, there is not a lot of friction so the paper can go farther, but if you try to slide a paper across a bumpy surface, it will not travel far. Friction can be a good thing and a bad thing.

Explain one real life example where friction is a good thing (stopping something from moving that needs to stop) and explain one real life exmaple where friction is a bad thing (stopping something from moving that needs to move). Think deeply. I want to hear your excellent examples!

Students remember to explain BOTH sides of friction (good vs. bad) and comment on someone else's comment. You may agree, disagree, or add to what they are saying. I look forward to the discussion.

Parents, other classes, and  other teachers are welcome to participate as well. We love to hear everyone's ideas! If we all work together, we could really get a great discussion in MOTION!

03/01/2012 12:08

I think learning the cause of force and motion has helped me use it

03/01/2012 13:25

One real life example where friction is a good thing is when, you are in a car and the person in front of you automatically stops. Friction can help you stop right then so there isn't a reck. Then friction can be a bad thing when it's a snowy day and your go fast on the highway and press the breaks really hard cause the person in front of you stops, ultimentlly there could be a reck and you or someone else could get hurt.

Anne
03/01/2012 15:00

Caroline, I agree with you that friction is a good thing when you're in a car and the person in front of you stops! I would hate getting in a car accident and getting hurt. Friction is very helpful at a time like that!

Lily H.
02/10/2013 15:48

I think That is such a great example. I don't think I would have probably thought of that.

Anne
03/01/2012 14:56

Friction can be a good thing when you are riding a bike and a car zooms in front of you! Since there's little friction, you can can press the breaks and you'll save yourself from getting hurt. This happens by the brakes squeezing the wheels causing the bike to stop. Friction can be a bad thing when you're at the pinewood derby and the road gets bumpy making your car slow down! Since there's a lot of friction, your car might stop. This happens by the road not being smooth any more so there's more friction which causes the car to slow down.

03/06/2012 11:17

i agree Anne, because if cars zooom fast, you'll have a bad INJURY

Emily
03/01/2012 18:51

I think that friction is great especially when it comes to carpet. Take for example, my baby brother, Adyn. Sometimes, when he has socks on, he slips and falls on the slippery wood floors because there is less friction between his feet and the wood. When you have carpet (fortunately), it is easier for me (and Adyn) to walk on the floor because there is more friction. (If you have a baby in your house, I suggest you get carpet!)
Friction might be bad when you are trying to open a jar of pickles, you might say. There is friction between the lid and the jar itself. Therefore, it makes it difficult to twist the lid off.

03/02/2012 13:04

Emily I love your thinking with carpet and friction being good with it! Also I liked how you thought about the jar, you had awesome thinking there!
- Caroline:)

Seth
03/05/2012 13:41

I think friction is important because when you're in your car and there is a red light friction is what stops your car so you won't get in a wreck.But a time where friction is not helpful is when you're playing soccer and you kick the soccer ball at the goal friction sometimes stops the soccer ball from going in the goal.Those are times you need friction and don't need friction.

Emily
03/05/2012 16:58

Seth, I like how you gave the example about the soccer ball. It was very creative! You deserve an A++++++++++++++++!!!

Seth
03/05/2012 18:30

Well thank you now I don't need to worry about my grade.

Connor
03/05/2012 17:09

An example when friction is good is when you rub a piece of flint (rock) and a piece of wood together and it creates fire. This is helpful when you get lost in the woods and you need to either stay warm or cook food. An example when friction is bad is when chalk meets the blackboard and makes that annoying sound.

03/06/2012 11:21

connor
03/05/2012 17:12

I agree that friction can be a bad thing when you play soccer. Especially whenever you try to make a goal and it hits the grass and goes the opposite direction that you want it to go.

connor
03/05/2012 17:14

The last comment I forgot to put Seth's name.

William W. Wood
03/05/2012 17:39

A real life example when friction is a good thing is when you rub your hands together to create heat on a cold day. The friction of your hands keeps your hands warm. Friction is a bad thing when you are playing bowling and you roll the ball and the runway slows the ball down making the impact not as strong which makes you not get a strike.

William W. Wood
03/05/2012 17:44

I like what Emily said about the carpet being good when you have a baby brother/sister. Babies don't have as much control when they walk as us, so you need carpets with friction. I been through it too. PAIN!

Seth
03/05/2012 18:28

Spectacular comment Emily, I like how you said that," There is friction between the lid and the jar itself. Therefor it makes it difficult to twist the lid off."

Kate
03/05/2012 18:39

my real life example of when friction is a good thing, is when you are at the store pushing a buggy.When you want to stop, you put force on it and friction causes it to stop. if we didn't have friction the buggy would keep going and it would possibly have a reck with another buggy. another reason why friction is a good thing is because when you are going down the stairs, you normally hold on to the rail. when your hand rubbs against the rail it makes friction and the friction causes your body to slow down so you wont fall. 1 reason why friction is a bad thing is because whenever you are vaccuming the vaccume is kind of heavy so you have to put more force into the vaccume in order for it to move. if we didn't have friction the vaccume would just move accross the carpet very easly.

Kate
03/05/2012 18:44

William, awsome thinking. i sometimes rub my hands together to keep me warm in class. its scientific and helpful!
:)

maleah
03/06/2012 06:07

I think force can be good during a horse race beacause it lets the horses can go faster so they can win the race.Then force can be bad during the horse race beacause the horse will start and stop then nobody will win the race.

zachary
03/06/2012 06:10

I think friction is a good thing beacause it helpscars slow down when they are fixing to have wreck. I think it is a bad thing because when u r trying to push a heavy box the friction will not let the box move. I like Emily`s because she put a good ex. about the carpet and how it has more friction from ur ft and the carpet and u dt slip.

maleah
03/06/2012 06:10

I like how kate gave the example with the buggys at the store wich friction can be bad at the time beacuse the child in the front could get seriously hurt

Mags
03/06/2012 06:12

I think friction is a good thing when you are roller skating and you are wanting to stop. Fritcion is a good thing when you are doing a bolling ball and you want to make a strick!!!!!!

Zachary
03/06/2012 06:13

Sorry, I accidently spelled helps cars helpscars. SORRY!

Austin Hamblin
03/06/2012 06:14

I think that friction can be a good thing because if your driving and you see the stoplight when it's green and all the sudden it turns red you slam on breaks.Then again friction can also be a bad thing when your driving and need to just slow down and gently tap the breaks and you stop insted of slowing down

03/06/2012 11:19

yeah austin!!!!!!!!!

Mags
03/06/2012 06:18

seth I like your thing but you got mrs.mcbrides thing but it is ok.

Austin Hamblin
03/06/2012 06:25

Hey Mags I like the example about the bolling ball !!!! You shold get an a++++

03/06/2012 11:14

stopping will be realy GOOD. Like if yo are on an bike, if you did not have a break you'll HURT your self bad.

03/06/2012 11:14

I think its good when you stop your car in your garage and its bad when you trip on the floor

luke gatlin
03/06/2012 11:15

Friction can be a good when you are driving on a road and somebody stops in front of you friction will slow you down.
Friction can be a bad thing when you are trying to move something and friction is stopping you from moving it.

03/06/2012 11:15

if you are pushing or pulling somthing it is force gravity is force

maleah
03/06/2012 11:18

kiya you did not answer the QUESTION

03/06/2012 11:21

very goooooooooood!!!

luke gatlin
03/06/2012 11:15

ha ha good one carter

Kate
03/06/2012 11:17

austin, i think you shuold say why maggie gets an a++++++++++. yeah you liked her example of the boling ball. but why!!!!!

CHRIS
03/06/2012 11:21

I THINK FRICTION IS A GOOD THING WHEN U CAN STOP ROLLERSKATIG. I THINK IT IS A BAD THIG WHEN YOU CAN'T STOP ROLLER SKATING!!

C.L.S. GUY
03/06/2012 11:17

i think friction is a good thing when yo are ice skating:). i think friction is a bad thing when you cant stop ice skating because YOU COULD RUN OVER SOMEONE LIKE AKID:(!!!

luke gatlin
03/06/2012 11:17

03/06/2012 11:17

seth.you are right if a car does not stop at the stop light the cars will crash

Braxton
03/06/2012 11:18

I think friction is a good thing when you are jumping on a trampoline. If you are jumping very high when you come back down to the ground you stay firm in the ground. If you didn't have friction in this situation then you could slip and fall. You could get seriously injured. Friction is bad thing when you are running a race and tied for first place. You need to go faster so you can win the race. Friction is stopping your feet from moving as fast as you want to go. If that happens it will be harder to win the race.

logan
03/06/2012 11:18

there is less frition while running in grass because some times you slip on the ground and then you fall.there is mere frition when you have have shoes on becuase it is harder to slid.

Presley
03/06/2012 11:18

I think friction is a good thing when you`re on rollerskates. If you are on rollerskates, you need to be able to stop sometime soon. If there wasn`t any friction, you wouldn`t be able to stop! Friction isn`t a good thing when you are ice skating. That`s because if there was lots of friction, you would probably fall down over and over and over again because there is so much friction!!!

pierce
03/06/2012 11:19

when frictin is a good thing its when your riding a bike and a squirl runs right in front of you ore any tip of anuiml.

Braxton
03/06/2012 11:20

Austin I agree with you. Friction would not be very helpful in that situation.

luke gatlin
03/06/2012 11:20

all of these are good answers!good job guys:)

kevion
03/06/2012 11:20

force is good when you have this big box or soming aqnd you have a floor that you can slide on with your socks there is less friction between the box and the floor so the box can just fly across the floor so you wont have a hard time moving the box across the floor .

friction is bad if you are slide and the friction is hard you could flip off and hurt or bust your head

friction can be good or bad it depends on how you use it so be really carefull

03/06/2012 11:21

when you skate on ice it is friction

pierce
03/06/2012 11:21

and you stop with your brakes

Presley
03/06/2012 11:21

Braxton, I love your examples!!! You are great at that! I totally love what you said.

eve
03/06/2012 11:21

one good thing about friction is that you can stop your car. withot it you could not stop to even get gas.one bad thing is you could not moon walk.

logan123
03/06/2012 11:21

emily should get an a++++++++++++++++++++!thats what you should det emily.GREAT!

luke gatlin
03/06/2012 11:22

chris dont put your name as C.L.S guy!!!

pierce
03/06/2012 11:23

when friction is a bad thing like a wagon and a rock stops it thats when it is a bad thing

Matthew
03/06/2012 11:23

One example of friction being bad is that when your pushing on the brake in a car and it throws you back.

03/06/2012 11:23

Friction is a bad thing because if your having a car race and there is a pile of rocks on the track you wont go as fast .The reason friction is a good thing is because if you were runing and you needed to stop friction makes it easyer .

Alexis
03/06/2012 11:23

Here is an Example of Friction.Well when you are sitting in a car and another car ran right in front of you.Then you hit your brakes really hard.Thats called Friction.Here is an example why Friction is a bad thing.Say that you were about to walk out of the door and Friction was holding the door.Then the door shuts on you because friction let go of the door that is why friction is a bad thing in life.I think that caroline and kate talked about something really good.

logan123456789101112131415]
03/06/2012 11:24

sorry ment get

03/07/2012 09:17

I have another example of when friction can be good, it can be good when you are going into a driveway and there are things you must look out for, the breaks in your car will help you stop and not hit, or break anything.

internet
03/16/2012 21:37

Friction is great with most things except moving heavy stuff around. What i would say is good about friction is to help you slow down faster on a car. Otherwise, if there wasnt friction and you were driving, it would be screeeeeech CRASH!!

Seth
05/23/2012 16:13

Dr.DonRoberts died today. ): ): ): ): ):
5-23-12

Seth
05/23/2012 16:14

Because he was sick. ): ): ):

Maggie
06/08/2012 13:49

Hi mrsmcb I hope you are having a great summer call me maybe