PPT-Warmup What is the magnitude and direction of the gravity of the Earth?

Warmup What is the magnitude and direction of the gravity of the Earth Solve this problem If the initial velocity of a ball is 126 ms when it is thrown upward from a height of 23 m what is the velocity of the ball when it passes this point on the way down. 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. The direction of a headwind is into the . front. . of . the plane. . So a headwind the will cause the plane . to slow down.. . A tailwind blows from behind the plane. It blows into the back, or . tail, . Is a . number. with units. It can be positive or negative.. Example: distance, mass, speed, Temperature…. Chapter 3: . VECTORS. 3-2 . Vectors and Scalars. Scalar. Is a quantity with both . direction. ASTR 101. Prof. Dave Hanes. Orbiting Near, Around, . and Away from the Earth. Let’s consider:. Ballistic missiles on Earth. Artificial satellites. Geosynchronous satellites. Actually escaping the Earth. EQ: What changes an object’s motion?. Friction and Gravity. What happens when you jump on a sled on the side of a snow-covered hill?. What happens at the bottom of the hill?. Friction and Gravity. Why does the sled’s motion change on the side of the hill and then again at the bottom?. 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. Chapter 3 TWO-DIMENSIONAL KINEMATICS. PowerPoint Image Slideshow. Figure . 3.1. Everyday motion that we experience is, thankfully, rarely as tortuous as a rollercoaster ride like this—the Dragon Khan in Spain’s Universal Port . Vector: quantity with both magnitude and direction. Josh: Start at (0, 0). Walk to (2, -4). Karina: Start at (-5, 5) Walk to (-3, 1).. Holly: Start at (3, 1) Walk to (5, -3).. Natalie: Start at (-3, -1). Walk to (-1, -5).. properties, addition, components of vectors . When you see a vector, think components!. Multiplication of vectors will come in later chapters.. Vectors have . magnitude. and . direction. .. Chapter 3: Vectors. 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 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. P3 Challenge – A rotating fan completes 1200 revolutions every minute. Consider the tip of a blade, at a radius of 0.15 m. a) Through what distance does the tip move in one revolution? What are b) the tip’s speed and c) the magnitude of its centripetal acceleration? . GOCE will use a three-axis gravitygradiometer to measure for the firstdirections. It is specifically designedfor the determination of the stationaryand 1mgal) and spatial resolutionanticipated require Derek van Westrum, Ph.D.. NGS Observations and Analysis Division. derek.vanwestrum@noaa.gov. NOAA’s National Geodetic Survey. geodesy.noaa.gov. 1. A Bit About Me. I’m Derek van . Westrum. I’ve been a physicist with NOAA’s National Geodetic Survey for 5 years.