https://padlet.com/nicki_collins/gq7k638512kf Made with a dash of wit en-us 2017-11-02 23:47:52 UTC 2024-10-02 11:55:53 UTC hello@padlet.com https://padlet.com/nicki_collins/gq7k638512kf/wish/203581315 What stood out:
1. In space it is very difficult to move an anvil due to inertia. In trying to move the anvil, the astronaut would simply end up moving himself. This makes complete sense, but is not something I had given much thought to.
2.Terminal velocity - Prior to starting this class, I would have said about the free falling objects probe that the balls would hit at exactly the same time. Figure 3.20 shows a golf ball and a styrofoam ball both being dropped. It explains that the styrofoam ball, being lighter, is more greatly impacted by air drag and reaches terminal velocity more quickly. I am picturing terminal velocity being reached as the number of air molecules being hit at any given time increases. The heavier an item, the more air molecules need to be hit in a given moment to reach terminal velocity. Neither ball in figure 3.20 is actually smooth, as in the probe, but I wonder if a ping pong ball would not reach terminal velocity faster than some other denser ball. I also read that the dimples in the golf ball actually create turbulence which sucks the air closer to the ball creating less drag. Theoretically a smooth ball encounters more drag and should reach terminal velocity more quickly than ball which is not smooth. I am left with many questions about how air drag impacts objects in the real world. How long does it actually take to reach terminal velocity? Is it longer than the balls would have when falling from the top of the school building? ]]> 2017-11-05 00:24:17 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/203581315 https://padlet.com/nicki_collins/gq7k638512kf/wish/207482645 The idea that forces and energy are not the same thing.  
*forces have directions   Energy doesn't
*forces always come in pairs.  Energy doesn't
* energy can't be created or destroyed   This is not true for forces
Newton's second law the acceleration of an object depends on the net force acting on the object and inversely on the mass of the object
A=F/m
  ]]> 2017-11-16 00:22:28 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207482645 https://padlet.com/nicki_collins/gq7k638512kf/wish/207505579 Two things that stood out to me are:
1. Everything in the world can be explained as an outcome of the interplay of four fundamental forces: electromagnetic force, gravitational force, strong nuclear force, and weak nuclear force. 
2. Electric forces are omnipresent: every contact force is actually an electric force, and electric forces hold every substance or object together. ]]> 2017-11-16 02:45:22 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207505579 https://padlet.com/nicki_collins/gq7k638512kf/wish/207778328 Chapter3 New Ideas
1.Fact- Static friction: has no relative motion.

2. All energys are associated with some type of force  (gravitational, elastic, electrical, chemical)]]> 2017-11-16 17:03:05 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207778328 https://padlet.com/nicki_collins/gq7k638512kf/wish/207786081 1. I have been misusing words within my classroom. I am using velocity, speed, and acceleration to loosely. 

2. Mass of objects relates to its inertia. In elementary ed we also loosely connect mass, volume, and weight.


]]> 2017-11-16 17:15:39 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207786081 https://padlet.com/nicki_collins/gq7k638512kf/wish/207858698
1. I never thought about an object as being "deformed" when a force acts upon the object to change its direction since it is not often visable for that breif moment. 


2. Our future depends on humans to have a strong understanding of force and motion to deal with the Earth's constant changes (global warming).   ]]> 2017-11-16 19:18:08 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207858698 mikecone1970 https://padlet.com/nicki_collins/gq7k638512kf/wish/207873179 1. I didn't fully understand that friction can occur through a liquid as well.  I was thinking of it as 2 solid surfaces rubbing together.

* acceleration is 0 when the velocity is constant 
*Objects in Free Fall (without an external force applied) have equivalent acceleration and fall at the same rate
*it was Galileo that developed the concept of acceleration using inclined planes
*objects with more inertia are more resistant to motion
-ex. elephant compared to a feather]]> 2017-11-16 19:44:26 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207873179 https://padlet.com/nicki_collins/gq7k638512kf/wish/207902076

I realized that inertia is what causes a heavy object not to move as easy as a lighter object..
 This book is a good book to help one understand such complicated concepts. I have to read it many times to get it, but its seems to be coming together.

]]> 2017-11-16 20:49:36 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207902076 cathy_etheridge https://padlet.com/nicki_collins/gq7k638512kf/wish/207904194 2017-11-16 20:55:27 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207904194 mstglad https://padlet.com/nicki_collins/gq7k638512kf/wish/207906848 2017-11-16 21:02:37 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207906848 sheryl_higgins https://padlet.com/nicki_collins/gq7k638512kf/wish/207907028 2017-11-16 21:03:07 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/207907028 https://padlet.com/nicki_collins/gq7k638512kf/wish/211230596 Chapter 3 Ah-has!
1. Newton's Laws of Motion are applicable only to macroscopic objects and at speeds that are much lower than the speed of light.
2. There are several different types of friction. 
I did not know either of the things above before I read the chapter. ]]> 2017-11-29 01:57:16 UTC https://padlet.com/nicki_collins/gq7k638512kf/wish/211230596