## Physics Essay

Research Question How does spacing between dominoes affect the average velocity of the dominoes? Increasing space between each domino will decrease its velocity, decreasing the space will increase its velocity. Force at which it hits next dominoes is increased it will take longer for it hit, acceleration is constant, the longer it has to travel, the longer it will take to hit. According to Newton’s first law every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

This relates to the domino effect since the nothing can happen until the first domino hits the second one and continues in such a pattern. Due to the conservation of energy, the law of conservation of energy states that energy may neither be created nor destroyed. Therefore the sum of all the energies in the system is a constant…. f one domino fails to reach other there is no force acting upon and therefore will cease. Also Newton’s second law relates to the velocity aspect of the research question: Newton’s Second Law of Motion: The relationship between an object’s mass (m), its acceleration (a), and the applied force (F) is F = ma.

Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector. A force causes only a change in velocity (an acceleration). According to Newton an object with a certain velocity maintains that velocity unless a force acts on it to cause acceleration (that is, a change in the velocity). This applies to the experiment because the further is has to travel the greater the average velocity. [pic] Variables Independent: distance between dominos, force applied,

Dependant: velocity Controls: the amount of dominos used, the size of the dominos, facing same direction, position of dominos (vertical) for selected tests, forced applied Materials: Dominos, stop watch, ruler, desk, carpet. Data Collection |Domino |Time |Distance |Distance Travelled (m) |Velocity (m/s) |Pattern* | | |+/- 0. 2 |between |+/- 0. 001 |+/- 0. 3 | | | | |+/- 0. 01 | |28% | | | | | | |*for graph | | | | |*for graph | | | | |Trail #1 |0. 58 |0. 01 |0. 26 | | | |Trail #2 |0. 53 |0. 1 |0. 26 | | | |Trail #3 |0. 55 |0. 01 |0. 26 | | | |Trail #4 |0. 56 |0. 01 |0. 26 | | | |Trail #5 |0. 56 |0. 01 |0. 26 | | | |Trail #6 |0. 7 |0. 01 |0. 26 | | | |Trail #7 |0. 52 |0. 01 |0. 26 | | | |Trail #8 |0. 56 |0. 01 |0. 26 | | | |Trail #9 |0. 52 |0. 01 |0. 26 | | | |Trail #10 |0. 4 |0. 01 |0. 26 | | | |Average |0. 55 |0. 01 |0. 26 |0. 5 | | |Domino |Time (s) |Distance between (m) |Complete Distance (m) |Velocity (m/s) | | | |+/- 0. 2 |+/- 0. 002 |+/- 0. 002 |+/- 0. | | | |18% |10% |10% |28% | | |Trail #1 |0. 55 |0. 02 |0. 52 | | | |Trail #2 |0. 77 |0. 02 |0. 52 | | | |Trail #3 |0. 68 |0. 02 |0. 2 | | | |Trail #4 |0. 66 |0. 02 |0. 52 | | | |Trail #5 |0. 63 |0. 02 |0. 52 | | | |Trail #6 |0. 68 |0. 02 |0. 52 | | | |Trail #7 |0. 71 |0. 2 |0. 52 | | | |Trail #8 |0. 64 |0. 02 |0. 52 | | | |Trail #9 |0. 67 |0. 02 |0. 52 | | | |Trail #10 |0. 60 |0. 02 |0. 52 | | | |Average |0. 6 |0. 02 |0. 52 |0. 8 | | |Domino |Time (s) |Distance between (m) |Complete Distance (m) |Velocity (m/s) | | | |+/- 0. 2 |+/- 0. 003 |+/- 0. 003 |+/- 0. 3 | | | | | | |28% | | |Trail #1 |1. 6 |0. 03 |0. 78 | | | |Trail #2 |1. 33 |0. 03 |0. 78 | | | |Trail #3 |1. 06 |0. 03 |0. 78 | | | |Trail #4 |1. 06 |0. 03 |0. 8 | | | |Trail #5 |1. 05 |0. 03 |0. 78 | | | |Trail #6 |1. 02 |0. 03 |0. 78 | | | |Trail #7 |1. 10 |0. 03 |0. 78 | | | |Trail #8 |1. 12 |0. 3 |0. 78 | | | |Trail #9 |1. 07 |0. 03 |0. 78 | | | |Trail #10 |1. 04 |0. 03 |0. 78 | | | |Average |1. 10 |0. 03 |0. 78 |0. 7**0. 9 | | 10%+18%=28%[pic] http://www. lorentz. org/~jmjvanl/domino. pdf An empiphenomenon is an event which is secondary and which accompanies some other, primary event. The forces between the falling dominoes are analyzed and with this by the effect of friction has been incorporated. A set of limiting situations is discussed in detail, such as the limit of thin dominoes, which allows a full and explicit analytical solution. The propagation speed of the domino effect is calculated for various spatial separations. Also a formula is given, which gives explicitly the main dependence of the speed as function of the domino width, height and interspacing.

The energy in the next falling domino doesn’t just come from the energy transferred from the domino that hits it. If that were the case, then the cascade would eventually stop. But each standing domino also contains it’s own potential energy, which was given to it by it’s being lifted into an unstable equilibrium by whoever set them up. This will most probably be enough to keep the cascade going for eternity. The kinetic energy of the striking domino only has to have enough force to overcome the threshhold energy that trips the domino out of it’s vertical unstable equilibrium.

How much energy comes from that domino falling over is a function of the geometry of the domino and the strength of the local gravitational field. http://en. allexperts. com/q/Physics-1358/domino-effect-1. htm Domino effect situations Use models to compare Economy etc. Use models to predict chain reactions like in nuclear reactions Dynamite Global Warming Simple way of showing how everything is interconnected! Lab Nothing happens without the first thing in place, everything has to be a certain distance to have a continuous movement Independent Dependant Control Velocity: [pic]