Friction Lab

Kinetic Energy is the energy of movement, whether it is horizontal or vertical, it’s kinetic. There is many different types of kinetic energy. There is; vibrational, rotational and translational (the movement from one location to another. IN our experiment we also have kinetic energy. The particles that move around need kinetic energy to bond because if the particles wouldn’t have kinetic energy, they wouldn’t move, then they wouldn’t be able to collide and at last there would be no chemical reaction taking place. But for a reaction to take place there has to be enough kinetic energy to overcome the bonding forces of the reactants. The minimum amount of kinetic energy need to cause a chemical reaction is called activation energy (symbol: Ea

Bounty seems to be more absorbent because it has tight stitching, which creates a larger surface area than other paper towel brands. This means that there is a larger amount of cellulose fibers in Bounty paper towels. Bounty is also thicker and softer than both the Sparkle and Dutch Fork High School paper towels, which are major factors that play into the absorbency of a paper towel. Based on this research the hypothesis was if Bounty, Sparkle, and Dutch Fork High School paper towels are tested for water absorbency, then Bounty will absorb the most water since it has the greatest absorbency factors out of the three brands. There is constantly new paper towels being created and promising that they are more absorbent than others, but the only way people will know is by testing them out, which is why this experiment was conducted. In this experiment, the independent variable is the different brands of paper towel. The dependent variable is the amount of water each brand of paper towel absorbs in thirty seconds. The constant variables are the amount of water the paper towels are in, the amount of time the paper towels are in the water, the amount of time the paper towels are allowed to drip after being taken out of the water, and the tool used to measure the amount of water

1. For this experiment, what were the independent variable and the dependent variable? What were the constants?

The independent variable for the experiment was the paper towels. The dependent variable was the absorbency and strength. The constants for the experiment were the size of the paper towels that were used, the amount of water, the size of the beaker, the size of the cylinder and the amount of the weight.

In this lab, we applied the concepts of velocity,force, acceleration, time, and distance in order to calculate which trial had a higher velocity. We also learned the relationship between each of the factors and how altering one plays a role in the other factors. For example, if we were to apply more force the velocity of the cart would increase, as well as the amount of time it took for the cart to go down the

Introduction: Chemical reactions are dependent upon two factors: temperature and concentrations of substance. We can monitor the rate at which a chemical decomposes or the rate at which a chemical substance appears. In this experiment we will be measuring the rate of decomposition of hydrogen dioxide with the following reaction:

1. Place a small amount of wax from a birthday candle into a test tube. Heat gently over a burner flame until the wax melts completely; then allow

In addition to , the data of the major finds in the experiment were the control speeds or no sail had an average speed of 138.3 sail had an average speed of 127.3.Sliding friction data average was -252.4. Rolling friction data had an average was –30.21.

-The more dissolved oxygen in the water, the more fish is observed in that area of water.

4.1 “What a Drag” lab tested 5 different surface areas; Tabletop, Waxed paper, Paper towel, Fine sandpaper,and Coarse sandpaper. These 5 different surface areas caused the weight to appear different . The data shows that it increases each time you do it again. Each time you pull the block over the 5 different surfaces it can increase or decrease.

8. How is the speed of the material being covered? Are we going just right, too fast or too slowly

This experiment asks the question, “What paper towel is more absorbent for the price per sheet?” Will the more costly paper towels absorb a bigger spill therefore giving the consumer reasoning on buying the higher priced paper towel? This experiment will examine the absorbency of three different brands of paper towels and then compare the results to the price of the product to find the absorbency value. First, we will purchase one roll from three different brands of paper towels from the same store at retail price. It’s important to purchase the products at full cost or note what the normal

The scientific question of the project was, Does the size of a tire affect the bike’s speed? The hypothesis was , If the smaller tires were used, then the bike would go faster. The important procedures were: Make sure all equipment is ready. Test the standard wheel of 1 rotation or pedal a second to ride to the finish line. Test smaller and bigger wheels. Record data and have at least 3 trials. Record the data on a piece of paper and compare results to your hypothesis. The Independent variable is the size of the wheel on the bike. The Dependent variable is the standard wheel or tire on the bike. The control group was the bike’s speed and the standard wheel or tire. The Experimental group is the other tires or wheels being tested on the bike. The control variables were the rate of pedaling , the same bike model was used, and the same distance for

The main objective of this lab was to measure the friction force it takes to start moving a weighted block across a table, and as it continued to move. This force was tested experimentally in three separate ways. The force was then solved graphically and mathematically through six different runs per method. TALK ABOUT RESULTS HERE.

The benefit that machine provides is called a mechanical advantage. Its amount is defined by actual mechanical advantage (AMA, includes force of friction). There is also an ideal mechanical advantage (IMA) but it does not take in account the force of friction which is inevitable in our world.