Part B:

Purpose: To determine the acceleration of Free Fall

Procedure:

1. You will need a meterstick, two cell phones and a tennis ball.

2. Put the meterstick on its end on a counter or desktop. Hold the tennis ball at the top of the meterstick.

3. Open up a stopwatch on one phone, and a video camera (slow motion works best) on the other phone.

4. Start the stop watch and hold it close to the meterstick. Start the video camera and aim so that you can see the entire meterstick and the stopwatch.

5. Drop the tennis ball from the top of the meterstick.

6. Stop the video and play it back frame by frame and record the time on the stopwatch when the tennis ball first moves, and the time when it first hits the table in your data table.

7. Repeat two more times.

Data:

Trial 1 start time / Trial 1 end time / Trial 2 start time / Trial 2 end time / Trial 3 start time / Trial 3 end time / mass
Tennisball

Part C:

Purpose: To identify how mass affects the acceleration of gravity

Procedure:

1. Find and record the mass of an orange car.

2. Find the mass of an orange car and one steel marble.

3. Repeat experiment part A for just one of your chosen angles, with a car + one marble.

4. Find the mass of an orange car and two steel marbles.

5. Repeat experiment part A for just one of your chosen angles, with a car + two marbles.

6. Find the mass of an orange car and three steel marbles.

7. Repeat experiment part A for just one of your chosen angles, with a car + three marbles.

8. Measure the mass of a tennis ball and record.

9. Measure the mass of a baseball and record.

10. Repeat procedure B with a baseball.

Data:

Which hole are you using:Mass of orange car:

Trial one start time / Trial one end time / Trial 2 start time / Trial 2 end time / Trial 3 start time / Trial 3 end time / Mass
Car + 1 marble
Car + 2 marbles
Car + 3 marbles
baseball