Directions: For this assessment, you will be helping Galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. To find the experiment you need to go to lesson 1.04 and select the apply tab. Scroll down to Galileo on the leaning tower. Follow the directions given there.

Part One: Part One: The Lab
Before you conduct your experiment, you need to form a hypothesis. A hypothesis is a prediction of what you think will happen in the experiment. The hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. Hint on how to write a hypothesis: Ifthen.

Please type your answer to question one in box below (2pts)

2. Record the results from step one of the experiment (dropping the objects in the air): (2pts)
First trial (Big Ball vs. Feather):

Second trial (Small Ball vs. Feather):

Third trial (Big Ball vs. Small Ball):

3..Record the results from step two of the experiment (dropping the objects in a vacuum): (2pts)
First trial (Big Ball vs. Feather):

Second trial (Small Ball vs. Feather):

Third trial (Big Ball vs. Small Ball):

4. Did the experiment support your hypothesis? Using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. (2pts)

5a. What forces were acting on the objects dropped in the air? (1pt)

5b. What force was acting on the objects dropped in the vacuum? (1pt)

Part two: Comparing Forces
For this section please use the following forces: gravity, electromagnetic force, strong nuclear force and weak nuclear force.

1. Choose two forces and compare and contrast these forces. You must provide two ways that they are alike and two ways that they are different. You may make a list, write in paragraph form, or make a chart. (5pts)

2. Choose two forces and compare and contrast these forces. These must be different forces than used in the prior question. Provide two ways that they are similar and two ways that they are different. You may make a list, write it out, or make a chart. (5pts)