Week of March 26th
Astronomy Final Exam Week!
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| Barred Spiral Galaxy Our Week Monday: 1. Exam Review 2. 16 Study Island Tests due today! Tuesday: Astronomy Final Exam Wednesday: 1. Motion and Forces begins - bring your workbook to class each day 2. We will begin our unit with a test of your reaction speed, and you are going to design and build a windmill 3. You might need some supplies from home, but I am gathering materials for you also Thursday: We will beginning designing our windmills Friday: No regular classes Here are some pretty cool things to look at that have to do with motion! Question of the Week In 1971, Astronaut David Scott during the Apollo 15 Moon Mission, dropped a feather and a hammer at the same time to prove a very important principle of physics. Watch this video clip and decide what is going on and why. Use your knowledge of the Moon to help you come up with the solution for what you are seeing. |
First of all, we know that the Moon has a weaker pull of gravity and there is no air or wind. Since there is no air resistance on the Moon, the objects will fall at the same speed. The equivalence principle states that the acceleration an object feels due to gravity does not depend on its mass, density, composition, color, shape, or anything else.
ReplyDeleteThe reason why they both land at the same time on the moon is because there is no force to interfere with the pull of gravity on the two objects. There is no air resistance to slow down one object. With no air resistance, it just comes down to the pull of gravity and you know that gravity doesn't make one object fall quicker just because of its mass or density. So because of this, both objects land, and will continue to land, at the same time on the moon.
ReplyDeleteOn earth they would not land at the same time because the air would a resistance to the feather BUT on the moon there is a weaker pull of gravity and there is no are so nothing would be stopping the feather or the hammer.
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