Blog 6: pull

As I was looking through some pictures of a trip my family and I took to Vegas for my sister's graduation, I noticed that in this picture my mom is grabbing one of my sister's pictures on her picture lei. As she pulls the picture towards herself, the picture pulls back with an equal and opposite force. The reason that the picture accelerates a lot more than my mom is because a=F/m and since the F's are equal and my mom's m is far greater than the picture's m, her a is a lot smaller.

Blog 5:

I was looking through some of my pictures of my last trip during the summer and i noticed that friction is everywhere. At first glance I did not notice anything to do with friction in this picture, but after i thought about it, i realized that there was a lot of good physics occuring. Friction is so useful for everyone. I noticed that if it weren't for friction then all the items on the table would be sliding off the table and I wouldn't be able to hold my chopsticks. Also there is a smart force being applied by the table to everything on it and it is equal to the force of everything in the downward direction on the table. Also, whenever I eat using chopsticks I am doing work because I am applying force in a certain direction.

Blog 4: Jumping

As I was looking at some of my old pictures from my trip this past summer to Atlanta, I came across this picture and immediately thought of Physics: potential energy and kinetic energy. The moment before my friend in the white jumps, his pe is 0 and his ke=x. When he reaches his peak in the air straight up from where he jumped like he is in the picture his ke is 0 and his pe=x. The energy isn't lost, only changed from ke to pe.

Blog 3: Racing carts

As I was looking through some old photos, I saw this picture and it immediately reminded me of physics and forces. Gravity is applying a force to this cart towards the floor, but the normal force, which is perpendicular to the ground, is equal to that of the amount of force that gravity is applying. It is an equilibrium. my friend is pushing the cart foward with a force that is greater than the force of friction with the ground. The net force is not 0 therefore the cart is moving.

Blog 2: Setting

A few days ago I was going through some photos of me and my sister playing volleyball. I noticed that when my sister sets the ball it is a projectile. This picture was taken during one of my sister's games and during this set she was setting the outside hitter. If I had known the exact initial velocity, the time it took for the hitter to hit the ball after she set it, and at what angle she had set the ball, I could figure out the distance it traveled from her hand and the final velocity. Also, assuming that I knew those variable, I could also deduce the vertical velocity and the x velocity that would have constant except for a slight decrease in speed due to air resistance.

I was going through some old photos when i noticed that baseball has a lot to do physics if the pitcher's mound is the origin then

the distance and displacement of a ball after it is pitched are different. If the pitch is swung on and missed, the catcher will throw it back to the pitcher and the displacement will be 0 feet. However, the distance will not be 0 feet because the distance between the pitcher and home plate is 35 feet so the total distance would be around 70 feet. If the batter hits the ball past the pitcher's mound the displacement would be negative but eventually the players would throw the ball back to the pitcher so at the end of a play when the ball is thrown back to the pitcher the displacement is always 0, while the distance varies.