Monday, October 17, 2011
Forces and Newton's Laws in Equilibrium
This unit is about Newton's laws and forces in equilibrium. His first laws states that an objects ability to continue in the state it is proportional to the object's mass. In this picture it is a glue stick rolling on a table. Since a glue stick does not have much mass it will not roll as much as something like a bowling ball. Also since it is round friction does not have as much affect as it would on an object like an eraser, where it would stay at rest after you push it. As you can see Newton's first law of inertia holds true and that it is proportional to an object's mass.
Monday, October 10, 2011
2D Kinematics #2
2D kinematics is the study of motion on the x and y axis. Here I have a ball in motion about to bounce. 2D kinematics are in our every day lives, such as jumping. But how do we know where this ball is going to land, most of us can tell by experience and by estimating. To find our answer mathematically we would need to find the acceleration in the x and the y axis, we would also need to figure out how long this object is in the air. From that we are able to tell how far the object will bounce from the previous spot. We did an experiment similar to this in class by rolling a ball of a ramp onto the table and finally on to the ground. We predicted how far the ball would land from the table by using these a couple of equations.
Thursday, October 6, 2011
Kinematics #3
This is another post of kinematics, which is about objects in motion. In this picture it is a eraser ball rolling on a table. This is different from the bouncing basketball because the basketball had an acceleration in the y and x axis, while this eraser ball only has an acceleration in the x axis. It doesn't mean that gravity is not important, gravity is always on but the acceleration in the x axis is what is important. When the ball rolls off the table then it will become 2D kinematics because gravity then plays a factor as well as the acceleration in the x axis.
Kinematics #3
This is another post of kinematics, which is about objects in motion. In this picture it is a eraser ball rolling on a table. This is different from the bouncing basketball because the basketball had an acceleration in the y and x axis, while this eraser ball only has an acceleration in the x axis. It doesn't mean that gravity is not important, gravity is always on but the acceleration in the x axis is what is important. When the ball rolls off the table then it will become 2D kinematics because gravity then plays a factor as well as the acceleration in the x axis.
Kinematics #2
Kinematics is the study of moving things. In the this picture there is a shoe rolling on the table. Kinematics is different from 2D kinematics because the object is only moving on one axis. In this case the shoe is only moving on the x axis. Because this object is moving on the x axis gravity would not be the acceleration, instead it would be how fast the object is moving forward. This is important in life because if we if the acceleration was fast enough the shoe would have had fallen, although it is not a far drop in life it is important.
Sunday, October 2, 2011
2D Kinematics
2D Kinematics is when something moves on the x and y axis at the same time. In the picture I took there is a basketball in a room. It has just landed from moving upwards and left at the same time. This relates to 2D kinematics because it is moving on both axis at the same time. Which also means that there are two different accelerations because of the two directions it is moving. Most things in real life move on both x and y axis. For example when you shoot a basketball you need to shoot it at a certain angle and power for it to go in the hoop.
Subscribe to:
Posts (Atom)





