PPT-Vertical Motion under Gravity

Theories of motion Aristotle was a Greek philosopher who lived in the 4 th century BC Aristotle explained the behaviour of a falling body by saying that its speed depended on how much earth element it contained . Universal gravitational constant G667 x 10 11 Nm kg 2 2 EPS 122 Lecture 14 Gravity and isostasy Theory of gravity Gravitational potential Definition The gravitational potential V due to a point mass m at a distance r from m is the work done by th Gravity. Gravity is a force that for us is always directed downwards. But to say that gravity acts 
downwards is not correct. Gravity acts down, no matter where you stand on the Earth. It is 
better to say that on Earth gravity pulls objects towards the center of the Earth. So no matter 
where you are on Earth all objects fall to the ground. B. . Energy . change is understood in terms of forces--pushes or pulls. . C. Some forces act through physical . contact . while others act at a distance.. Big Idea 13 : Forces and Changes in Motion. Benchmark Number . What’s . Special About Perception?. Visual perception important for survival. . Likely optimized by evolution. at least more so than other cognitive abilities. Human visual perception outperforms all modern computer vision systems.. Gravity. Gravity is a force that for us is always directed downwards. But to say that gravity acts 
downwards is not correct. Gravity acts down, no matter where you stand on the Earth. It is 
better to say that on Earth gravity pulls objects towards the center of the Earth. So no matter 
where you are on Earth all objects fall to the ground. Motion. Balance and Stability. Fluid Mechanics. Force. Introduction to Biomechanics. Biomechanics is a science concerned with forces and the effect of these forces on and within the human body. . It helps us to understand the use of techniques in different sports and improve the efficiency of movement.. A demo. http://www.youtube.com/watch?v=mrKLJjx9VT8. Motion in a Vertical Circle. Consider the forces on a ball attached to a string as it moves in a vertical loop.. As with any object moving in a circle there is a net force acting towards the center of the circle.. Place on your desk:. *. Calculator & PROTRACTOR. *. Orange. homework chart . *. Horizontal Distance WS. 1) . In a projectile “curved path” the vertical and horizontal vectors are ____________of each other.. Physics. Coach Taylor. Broad Run High School 2010-2011. Objectives. Recognize that the vertical and horizontal motions of a projectile are independent.. Relate the height, time in the air, and initial vertical velocity of a projectile using its vertical motion, then determine the range.. Astronomy, Chapter 2. D Taylor. © 2011, 2012, 2013,2014. Gravity and Motion. 2. Introduction. Gravity. gives the Universe its structure. It is a universal force that causes all objects to pull on all other objects everywhere. 7-2 Projectile Motion Independence of Motion in 2-D Projectile is an object that has been given an intial thrust (ignore air resistance) Football, Bullet, Baseball Moves through the air under the force of gravity Earth, Moon, and Sun Gravity and Motion Isaac Newton was the first scientist to explain what keeps the Earth and Moon in orbit Force – a push or a pull There is a force acting between the Earth and the moon that keeps them in orbit the . process of moving . or . changing . places . or position. Anything you do while moving is motion.. Fact: Speed is a major type of Motion. Determining motion. In order to determine motion you must know direction and speed. Convert the following to scientific notation. Distance from Sun. : 92,960,000 . miles ____. Estimated Age of universe – 14,000,000,000. Convert the following to standard form. Speed of light = 9.0 * 10.