Blog Post #14

Hey so this is me with another blog post.  So today I'm going to be talking about potential and kinetic energy.  So potential energy is basically when the energy when an object is not moving and kinetic energy is when an object is moving.  Also energy is never created nor destroyed just changes form, also known as the conservation of energy.  This means that if the potential energy of the football is something, that means that when it is thrown, over time, the potential energy will turn to kinetic energy, because its in motion.  So the energy will always be the same, as long as it stays in the air.  Once the ball lands, the energy is changed and when it is thrown again, there may be a different amount of energy.  So this is basically energy.  Sorry if it's a little confusing and grammatically incorrect.  It takes a lot of understanding to fully get it.  So enjoy this, I hope you learned something new and now you can say that I learned about energy.

Blog Post #13

Hey guys.  It's me again with another blog post.  Sorry but I'm going to be talking about egg drops again.  So this week we finally did our egg drops.  My partner and I made a type of box with tons of little foam cushions in it.  We made sure that the box was secure but has enough room for the impulse to push through.  There are a lot of physics involved in stopping an egg from breaking.  My partner and I realized that an average egg has a certain mass.  We used this to calculate the momentum of the drop.  We also realized that whatever we build has to not only cushion the egg from the bottom, but protect it from the impulse pushing down on the egg.  Therefore, we made a box full and placed the egg in the center.  This makes the egg experience the cushioning from below it and protect from the impulse pushing from above at all sides.  We also had to make sure that the egg doesn't shift around in the box.  So we made sure the the egg was secured in a protected foam wrapping and placed styrofoam packing-peanuts in the box.  This is because when the egg shifts around, it has inner liquids inside it, therefore if the liquids shift around a lot, the shell could crack from the inside.  We also had another problem that we never expected.  There was a ton of air pushing against the box.  This made the box shift slightly to the right.  However, this actually helped.  You see, when the air pushes on it, it increased the time of impact on the egg.  This will also help cushion the egg in a sense that the box will hit the ground slower.  But whatever the cause, the egg survived.  I believe the only modifications I would make on the contraption is maybe making adding a parachute, if possible.  If not, I would have just left it.  And that was our egg drop.  Sorry it was so long today.  But I hope you guys could try an egg drop.  And be creative on how to make it.

Hey guys I'm back with another installment of my blog.  This time I want to talk to you about egg dropping.  So, did you ever talk to your friends and go, how do I make an egg drop from a certain height without making it break.  So i have prepared a picture that I drew on my awesome Wacom tablet, of a person dropping an egg of a ledge.  You can easily find the velocity of a single egg by using various equasions.  We are going to say that this ledge is about 10 meters.  But to save space I solved for it already and got about 14 m/s.  Using this, we can solve for momentum and find out how much we need to slow it down, in order for it not to crack.  Anyways, I really haven't fully mastered it so I cannot say for sure that I know what I am doing, anyways, hope you enjoyed it.  I basically showed you the steps on how to not crack it, but it's really up to you to be creative in finding new and different ways.  So have fun and always be creative.

Blogpost #11

Sorry if this doesn't work I will upload it when I get a chance to use my computer again. Anyways tonight I will be talking to you about momentum yet again. Today's focus is on conservation of momentum. This is basically saying that in a select system or operation an object will not change when acted upon a different object. Confusing? Yeah I know. Let me explain through example. These balls are flying directly at each other. When they hit they will basically trade velocities or speeds. Meaning that if the first ball had a velocity of 4m/s and the second had a velocity at 5 m/s, when they hit, the first ball will bounce back at around 5 m/s and the second one will go at 4 m/s. So the next time you and your friend are throwing balls and your friend decides to throw a ball at you, don't be an idiot and throw the ball directly at that ball expecting it to bounce off and not hit you in the head. Anyways I'm hoping to get off of this chapter soon because it's making my brain hurt but for now I hope you enjoyed this demonstration of the conservation of momentum.

Hey there! I'm back with another blog post this time we started a new unit.  Today I'm going to talk to you about what I think is momentum.  I think momentum is that one moment in life where you go umm... Just kidding.  I think momentum is when an object is projected and as Newton's 1st law states, "an object in motion tends to stay in motion unless acted upon by an opposing force".  So that motion is momentum.  In this case my friend, I don't know if she wants me to tell her name online, is the object in motion and she wants to stay in motion even at the bottom.  But friction will make her stop.  But thats besides the point.  Anyways thats what I think momentum is.  I hope you don't listen to me because I am probably wrong.  Anyways until next week.

Blog Post #10

Hey it's me again with yet another blog post on force.  Today I am going to talk to you specifically on Newton's 1st law.  This law states that an object in motion tends to stay in motion unless acted upon by an outside unbalanced force.  This basically means that if an object is in motion, taking my picture of a cross country runner as an example, and say he is running at a constant velocity, the moment he crosses the finish line, he will be acted upon by an opposing force.  Meaning he will stop.  However, he is not only stopping, but he is decelerating or accelerating in the opposite direction.  Because if he were to stop suddenly, he would most likely fall over or trip.  I believe this is due to momentum or something (we didn't learn that yet).  But anyways I believe that is what you need to know about Newton's 1st law.  Next week I will be hopefully going over Newton's 2nd law.  

Blog Post #9

Hey there I am not sure if I used this pic yet because this pic was taken back from a month ago.  Anyways I will be talking to you about force today again.  I am going to talk about "freebody diagrams" (without the diagram).  So as you can see this is a picture of a runner.  You may not know this but this was taken at the finish line.  So he is decelerating.  Free body diagrams measure anything that force pushes or pulls against.  So there are two forces that we are able to find.  That would be the mass of his body pushing down and the force of the ground pushing up.  This causes the body to stay up right and not fall over.  Now, because he is decelerating, he is accelerating in the opposite direction, or backwards.  So when drawing the diagram we will have an arrow pointing down labeled "mg" and an arrow pointing up labeled "N" for normal.  Both of which are the same length.  Also there will be an arrow pointing opposite the runner's direction.  So if we was running to the left, the arrow would be pointing to the right.  And vise versa.  Also this arrow should be labeled "F for force".  And that is basically it.  So I hope you have enjoyed yourself.