Pheshman Physics Week of 5/12
- FBD---.Force Diagrams or as we refer to them in Physics FREE BODY DIAGRAMS FBD not SBD
- Each assignment should be in your notebook. You do not need to copy the entire blog discussion just Key ideas (summary).
- I will be checking the Blog throughout the week.
- Calculate your Weight in Newton. Add to you Student information page.
- Weight is the force due to gravity (Newtons) see previous posts
- Calculate the weight in Newtons of 10 everyday Objects
- Complete FBD for 1-20 Discuss
- For each identify whether it accelerates or not.
- Draw the direction of the net force
- Complete Self Check Quiz put your answers in NOTEBOOK with TITLE FBD SCQ
- Complete FBD WS #2
- For each identify whether it accelerates or not.
- Draw the direction of the net force
- Watch Newtons Dark Secret
- Answer Questions on the Blog
- Use the idea of Force of gravity & mass to explain why all objects accelerate at 9.8m/s/s
is this all due tomorrow (tuesday) ?
ReplyDeleteWhen is all of this due?
ReplyDeleteIt says the week of 5/12 in the title. Which would indicate the work should be completed by the end of the week.
ReplyDeleteAre you able to post the answers for the free body diagrams so we can compare answers?
ReplyDeleteDan Nachtigall Mod 7 The reason gravity effects everything at the same rate is that everything in the universe has mass and well Force is mass•Acceleration and acceleration is a distance over time over time acceleration does not involve mass so yeah drop a brick and a pillow the brick will hit the ground harder they have differing mass but mass isn't included in an acceleration/gravity.
ReplyDeleteWhen you say copy the blog discussion in our notebooks what exactly do you mean, like copy down the gist of what you posted for the week of 5/12?
ReplyDeleteI'm a little confused when it comes to #20 on the first FBD worksheet. Would we be accounting for the gravity on the Earth and the moon? Would there be any other forces acting on the satellite?
ReplyDeleteYes that one was a bit confusing, but what I did was just write down the force of gravity coming off the satellite because there would be no other forces acting on it
DeleteAll matter has mass, and all types of matter have different masses, but all matter has gravity acting upon it no matter the amount of mass. No matter what, gravity is the only force that is constant (when talking about objects on the Earth). Being that the force of gravity causes an acceleration of 9.8 m/s^2, this is the acceleration that every object on Earth has. When things fall at different rates, it is merely due to differences in things like air resistance. If all other forces were taken out, everything would accelerate at the exact same rate of 9.8 m/s^2.
ReplyDeleteAfter reading several other comments, I think you best summarized the idea of gravity. It of course is an independent force which acts on all objects, no matter the mass, equally. As long as the force of gravity is not affected by other forces, anything on Earth will behave the same.
DeleteBeth McNamee Mod 4
All objects accelerate at the same rate (9.8 m/s^2). The only time they do not is when air resistance and other things are affecting objects. No matter what the object is, all objects share the same rate of acceleration because it is constant.
ReplyDeleteHey fellow bloggers, can someone explain to me how to calculate weight in Newtons? I was absent on Tuesday i believe it was. Thanks!
ReplyDeleteWell first you take your weight and multiply it by 1 kg and then divide your weight by 2.2lbs and once you get that answer you'll have your mass in kilograms, but we need it in Newtons so you take your mass in kilograms and multiply it by 9.8 m/s/s and finally you get your weight in newtons
DeleteThanks Nikkilas.
DeleteWhen you have a weight, you must use factor label to convert it into kilograms. One kilogram equals 2.21 pounds. Use this to find what the weight is in kilograms. To find Newtons, you use the equation w=mxg. Your m is the weight in kilograms, times g, which is the acceleration of gravity, 9.8. There you go, how to find Newtons!
DeleteYou must convert pounds to kilograms. One kilogram equals 2.21 pounds. Use this to factor label pounds into kilograms. After that, use the equation, w=mxg, mass times gravity. Mass= the weight you found in kilograms, times the acceleration of gravity, 9.8 m/s^2. This will give you Newtons.
DeleteThanks everyone!
DeleteEverything accelerates at a rate of 9.8 m/s/s because mass doesn't affect acceleration. Any object with any mass can accelerate at any rate. The mass only affects how hard it would hit the ground.
ReplyDelete-Gianna S.
Gravity, is an independent force. Everything accelerates at the same rate due to the fact that it doesn't rely on anything. Gravity doesn't get affected until the INSTANT that it hits the ground.
ReplyDeleteAll objects accelerate at 9.8 m/s/s. Any object that has mass is affected by gravity. Gravity is only dependent on the source is it created by, and not what it is applying on.
ReplyDelete-Justin Liu mod 7
I agree with this, and how gravity is independent. To add onto this, gravity will keep working until the object hits the ground. When this happens, a stronger force acts upon the object, not letting it fall any further
Delete~Emily Mack
mod 7
All objects accelerate at 9.8 m/s/s due to the fact when anything is on the earth's surface, the pule of the massive planet will push on all of the parts equally. Gravity affects all object, and it affects all objects in the same way, by pulling all objects towards themselves.
ReplyDelete-Larry S
Hey, if that's true. And it has more mass shouldn't it have more stuff and shouldn't it way more? Which stands to reason if gravity pulls on it harder it would have a greater acceleration.
DeleteSince everything has a mass it effects the gravitational pull. There's nothing without a mass so there's effects to every object. There's also the factors of how dense the object and it's shape. Ex. a feather is curved so there's more air resistance compared to a round bowling ball.
ReplyDelete-Madison Hull
Gravity as you all know, is an independent force. Nothing affects the acceleration of gravity, and it does not matter how much mass an object has. It will always accelerate at 9.8m/s/s. The gravitational pull of the Earth's surface will bring every object to the surface as equal as the others.
ReplyDeleteAll objects on Earth accelerate at a rate of 9.8 m/s/s. No matter the mass or weight of an object, it will do this. This acceleration is due to the gravitational pull of the Earth. Gravity does not depend on any other force other than its own, therefore it is constantly 9.8 m/s/s.
ReplyDeleteAll matter in the universe has mass, being the amount of "stuff" it has; the amount of matter in objects on our vast Earth does not change gravity's force. Gravity will always be 9.8 m/s/s, whether a light pencil or a heavy textbook is dropped. We know this because when dropping objects from the same height away from the ground, they all hit the floor at the same time. For objects on Earth, gravity is the only constant force. Every object on Earth accelerates at 9.8 m/s/s. Other forces that could possibly occur, such as air resistance, will change the acceleration, but if all other forces are factored out, the acceleration will stay 9.8 m/s/s.
ReplyDelete-John Mairone Mod 7
All items accelerate at 9.8 m/s^2 because they are subjected to gravity witch pulls items towards center of eart at this rate. ALL items do this because acceleration has nothing to do with mass. so mass does not change how fast it accelerates towards center of earth
ReplyDeleteBrooke Wallace Mod 7
Everything accelerates at a rate of 9.8 m/s^2 because of the constant force of gravity pulling items down to the earth. If you were to drop a bowling ball and a feather, with the same amount of air resistance on both objects, they would land at the same exact time. This is because gravity does not depend on the mass of an object. No matter what the mass of an object is, gravity will always cause the object to accelerate at 9.8 m/s^2.
ReplyDeleteEmma Hoffman Mod 4
for the airplane questions for the 1-20 ws, what force acted upon the plane besides life and gravity. Would there be drag? Also, for the elevator, is there tension for the cables?
ReplyDeleteAll objects accelerate at 9.8m/s/s on Earth because of gravity. Things with more mass have a stronger gravitational pull. Earth is big, and we are on it, that's why we are pulled in towards it. Jump off a cliff and you'll fall down, not up, not sideways, but down, thanks gravity! And thanks to Sir Issac Newton, (and Einstein) we have a better understanding of gravity and we know that it pulls us towards the center of the Earth at 9.8m/s/s.
ReplyDeleteAll objects on Earth are affected by gravity. The force of gravity pulls objects towards the center of the Earth at an acceleration of 9.8m/s/s. This principle is not affected by the mass of the object. There for, an object with a lot of mass like an anvil should accelerate equally as fast as an object with little mass like a marble when they are free falling.
ReplyDeleteMahfuz-ul Hasan Mod 4
ReplyDeleteAll objects on Earth are affected by gravity. Everything gets pulled down to the middle of the Earth because of the Earth's gravitational pull. The more mass something has, the more gravitational pull it exerts. Every things that is dropped will constantly accelerate towards the middle of the Earth at 9.8 m/s/s. It wouldn't matter on how much mass the object has because it will still accelerate at the same constant speed towards Earth.
Everything on Earth is being pushed towards the center of the Earth by gravity. It does not matter how much the object weighs or how much mass is has, the force of gravity will always be 9.8m/s/s. With thus theory, all objects when dropped from a certain height, should hit the ground at the same time. As many of my classmates before me stated, the reason objects don not always act that way is because of other factors such as air resistance. However, if you were to take out the other factors, the theory would work.
ReplyDeleteAll objects accelerate at 9.8m/s/s. In class we did the experiment with a bowling ball and a water bottle, both being dropped from the same height, to see if they landed at the same time. No matter how much an object weighs or whatever its mass is, they land at the same exact time because the earth's gravitational pull acts the same on every object. Gravity pulls things down because it is pulling you to its core.
ReplyDeleteThe acceleration of gravity is just acceleration. Here on Earth it is 9.8m/s^2. Gravity is an independent force that doesn’t act upon things according to their mass. Everything on Earth accelerates toward the center exactly with the same acceleration, that is why when anything is dropped it would reach the ground the same time as anything else if the only force acting on it gravity. On other planets there might be more or less gravity, but no matter what any object would reach the surface at the same time. An object that would not accelerate 9.8m/s^2 on Earth could only happen if it’s mass is greater than the Earth’s.
ReplyDelete-Neil Patel Mod 7
All objects that are dropped from any height, not matter the mass will fall at the same speed and acceleration. Like the experiment we did in class with the bottle of water and bowling ball, the force of gravity pulled the objects down and they landed at the same time. Even though the bowling ball weighed much more and had more mass, the gravitational pull made the objects fall at the same speed, making them land at the same time. Every object will fall at 9.8m/s/s.
ReplyDelete-TJ Aldridge Mod 7
The Earth's gravity pulls all things towards the Earth's center at an acceleration of 9.8m/s/s no matter how much mass the object has. This is because mass and acceleration do not depend on each other. Acceleration only depends on Velocity and time. The equation for Force is F=ma. This means that an object with more mass will hit the ground with greater force than an object with less mass, but the two objects will still have the same acceleration.
ReplyDeleteThe rate at which all objects accelerate is 9.8 m/s/s, also known as gravity. On Earth, all objects that have mass are pulled towards the center of the Earth at 9.8 m/s/s. No matter the mass of an object, they will all accelerate at 9.8 m/s/s. Things like air resistance sometimes have an effect on objects as well. Take away air resistance, and you have two objects with different masses, they will meet the ground at the same time.
ReplyDeleteGravity is a force that acts with equal acceleration on anything that has mass. The amount of mass does not impact the acceleration, just whether it is present or not. On Earth, gravitational acceleration is 9.8 m/s/s. This can appear to be different in every day life, what with things such as air resistance impacting an object. In a vacuum, all objects will accelerate at the same rate when gravity acts upon them. -Noah Mascione, Mod 4
ReplyDeleteAll objects will accelerate at 9.8 m/s/s unless given a specific number. Gravity acts on anything with a mass and pulls it down.
ReplyDeleteGravity is a force that pulls anything with a mass towards the planet at 9.8 m/s/s. If two things of different masses are dropped from the same height, they should both reach the ground at the same time. Other factors such as air resistance could affect it. If they are dropped at different heights, one object will reach the ground before the other, because one would accelerate more than the other. Again, other factors may affect it.
ReplyDelete-Aisorjo Shafi Mod4
All objects accelerate at 9.8m/s/s because of the equation F=ma. An objects with greater mass will have a greater force. An object with a smaller mass will have a smaller force, but both these objects will have equal acceleration. Gravity is a force that acts on all objects. In class, we discussed how every object falls at 9.8m/s/s.The reason a piece of paper and an iphone dont hit the ground at the same time is because of drag force, which plays as a variable.
ReplyDelete-Samantha Pastore Mod 7
Gravity has a force of 9.8m/s^2. This means that all object would fall at this rate in a place with no air resistance. The mass of an object does not effect the rate at which it may fall. Like in class, a piece of paper and a book may fall at the same rate when they are on top of each other, however, when they are besides each other, the paper falls slower due to its surface area. The force of gravity and air resistance are the only two forces acting upon a falling object.
ReplyDeleteMatt Epstein Mod 4
Gravity is the constant variable, while acceleration can change based on the force that is acting on it. Gravity acts on anything with a mass. The question is why do things with a different mass accelerate at the same rate. The answer is gravity. If you push an object with more mass it will accelerates slower than an object with a lesser mass/density. If two objects with different masses are dropped towards earths surface, they should hit the ground at the same time. This is because gravity is a constant force. However, different factors aren't included like air resistance and other forces. Force=massxAcceleration is one of Newton's laws.It discusses the relationship between an objects mass and how much force it needs to be accelerated.
ReplyDeleteall objects accelerate at 9.8 m/s due to the gravitational pull .Just like when we dropped the bowling ball and water bottle they hit the ground at the same time. If tit was a feather it wouldn't have been at the same time because the air would resist it. Everything falls at 9.8m/s. -Matt Dorner
ReplyDeleteJust as everyone has said before me, gravity acts upon every object the same, constantly pulling them towards the center of the earth at 9.8 m/s^2. Ideally, when dropped, every object should fall at the same rate and hit the ground at the same time. However, this could only be the case if there were absolutely no wind resistance. This is why if you dropped a rock and piece of paper, the rock would obviously hit the ground sooner because it has less wind resistance than the paper. The mass of an object only effects its weight, not how quickly it accelerates towards the ground, because weight is different for all objects, but the acceleration is always the same.
ReplyDeleteJust as everyone has said before me, gravity acts upon every object the same, constantly pulling them towards the center of the earth at 9.8 m/s^2. Ideally, when dropped, every object should fall at the same rate and hit the ground at the same time. However, this could only be the case if there were absolutely no wind resistance. This is why if you dropped a rock and piece of paper, the rock would obviously hit the ground sooner because it has less wind resistance than the paper. The mass of an object only effects its weight, not how quickly it accelerates towards the ground, because weight is different for all objects, but the acceleration is always the same.
ReplyDelete