Hypothesis: If we drop both of the balls, then the golf ball will have more velocity.
Results: We did a 1 meter drop, a 2 meter drop, and a 3 meter drop six times each with a ping pong ball and a golf ball. We did each three times with a stopwatch to record time, and we did each three times using the Vernier sensor with software. We did not slam or throw the ball downward; the only thing accelerating the balls was gravity. We tried to find an average time. The results are shown below:
1m golf ball: 1.6s, 1.04s, 0.83s (avg. 1.16s)
1m ping-pong ball: 0.76s, 0.9s, 0.84s (avg. 0.83s)
2m golf ball: 1.32s, 1.04s, 1.04s (avg. 1.13s)
2m ping-pong ball: 0.9s, 1.11s, 0.98s (avg. 1s)
3m golf ball: 1.11s, 1.32s, 1.25s (avg. 1.22s)
3m ping-pong ball: 1.05s, 1.18s, 1.11s (avg. 1.11s)
The data was quite interesting. There were 3 instances of 1.04s long drops (2 in the same type of test). The longest time clocked in at 1.6s on the 1 meter golf ball test. The shortest was 0.76s on the 1 meter ping-pong ball test.
Here are the velocities for each test's average:
1m golf ball: (avg. 1.16s) Velocity= 0.86m/s
1m ping-pong ball: (avg. 0.83s) Velocity= 1.2m/s
2m golf ball: (avg. 1.13s) Velocity= 1.77m/s
2m ping-pong ball: (avg. 1s) Velocity= 2m/s
3m golf ball: (avg. 1.22s) Velocity= 2.46m/s
3m ping-pong ball: (avg. 1.11s) Velocity= 2.7m/s
My hypothesis was NOT supported. I averaged the results of both the ping-pong tests and the golf ball tests and the ping-pong tests had greater velocity overall. The averages were 1.96m/s on the ping pong test and 1.67m/s on the golf ball test. This could have been because the ping pong ball was lighter and moved faster. The larger amount mass in the golf ball could have slowed it down, therefore giving it less velocity.
The pictures should be included in this post. If not, please let me know and I'll email them.
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