One is a regular golf ball and the other is a wiffle-style golf ball with holes in its surface. Click here to view a slow motion video of two golf balls being dropped simultaneously.Both balls dropped at nearly the same rate. One is a regular golf ball and the other is the same size and shape as a golf ball but is hollow and has much less weight. Click here to view a slow motion video of two golf balls being dropped simutaneously.The two balls fall at the same rate even though they have very different weights. Click here to view a slow motion video of a golf ball and a baseball being dropped simultaneously for Part 1 of the activity.In addition, there are slow motion videos of objects being dropped for this activity below. Students can record their results using a video recorder for analysis. Many smart phones can record video in slow motion. Click to download this simple activity where students drop different objects to understand what causes them to fall at different rates. This activity is from the Metro Family Magazine.įalling for Gravity. Gravity Water Drop Click the link to view a simple activity that illustrates how the acceleration of water is the same for a stream of water and for an entire cup of water. This activity may be done as a classroom activity with an embedded assessment of content knowledge. Gravity Meter Click to download this activity where students build a simple device that illustrates the direction of the Earth's gravitational pull. Click here to view a streaming lecture discussing Keplers's laws of planetary motion. Click here to view a streaming lecture discussing our understanding of the nature of gravity. Click to view or download the presentation in PDF (3.3 Mbytes). HTML Click to view the presentation in html format. Click to download the MS Powerpoint file (7.9 Mbytes). For content related to the wobbling of stars due to the orbits of planets, see the unit on Wobbling Stars and Barycenters. This unit introduces gravity as a force and the nature of the orbits of planets.
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