Physics: Dropping Knowledge
The day after students arrived, we began academic classes. One class, Physics, immediately took their heady concepts and formulas to the test.
During a Physics Lab last week, the students were asked to consider the forces of gravity, drag, and impact on a given object. In our Physics class last Wednesday, the object was a raw egg.
Gravity, when left entirely to its own devices, will cause a falling object to accelerate. So, as we all know, if you simply dropped a raw egg from a ~4.35 meter ledge (as the students did), that thing should definitely break! But, students were asked to help create “drag”, or air resistance… or friction (all synonyms that helped me understand this concept) on their egg so they could slow acceleration and hopefully keep the egg from cracking.
Another way to protect the egg is by displacing or slowing down impact. If you protect the falling egg with some kind of buffer such as bubble wrap, the time of impact will increase, so the intensity of the hit will be spread out over… maybe .5 seconds instead of .25. In this way, the students could also attempt to protect their egg.
So, our Semester 10 Physics students were given a variety of materials to increase drag and decrease impact. The one caveat was that they could only build one device. They couldn’t have something attached to the egg and on the ground; they had to get creative. And, they did.
Some built elaborate pillows dangling just below their eggs to decrease impact. Others, as you’ll see in the picture below, made parachutes.
We’re so lucky to have an academic environment where our kiddos can learn hands-on – test their ideas and learn from their experiences. Not one egg broke!