PPT-Lesson 3 – Acceleration Due to Gravity

MindsOn this slide is not intended to be shown in class Materials 2 sheets of paper 1 rubber ball Demo Take 2 identical sheets of paper Show students they are identical Crumple one sheet into a ball Hold out the . What Is Motion?. Motion. is when an object changes place or position. To properly describe motion, you need to use the following:. Start and end position?. Movement relative to what?. How far did it go?. Now. Josh Frieman. Fermilab. and . the University . of Chicago. Progress on Old and New Themes in Cosmology. Avignon, . April 18, 2014. Last Supper. (in earlier version of program). Cosmologists discuss BICEP2 results at PONT banquet. (Fermi acceleration at shock: most standard, nice powerlaw, few free parameters). main . signatures to . be determined: . E. min . , . E. max. [. Ã. timescale . t. acc. (E. ) ], . spectral slope . 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. . ’. s law of . universal gravitation. :. where:. F is the force of gravitation.. m. 1. and m. 2. are the masses.. r is the distance between the masses.. . . is the gravitational constant that is equal to 6.67x10. a = 0 . case. no . acceleration  velocity is constant  v = . v. i. position . vs. time  . x. f. . = x . i. . + . v . t,. . x. i. . is the starting . position. acceleration = a = constant. Describe the speedometer on a car that is entering a highway, drives for 25 miles and then exits the highway.. Consider the two situations below. When a shuttle bus approaches a stop, the driver begins to apply the brakes to slow down 5.0 s before actually reaching the stop. The speed changes from 9.0 m/s to 0 m/s over time.. Bell Ringer 11-7-13. Compare and Contrast Speed, Velocity and Acceleration. is the speed of an object in a particular direction. MYP Unit Question: What Moves YOU!!. Area of Interaction: Human Ingenuity. Acceleration is a measure of . the change in velocity per unit of time. When the velocity of an object is changing, it is . accelerating. Negative acceleration: . slowing down. Positive acceleration: . V. ector quantity: . magnitude (value) & direction. R. ate . at which an object changes its velocity. . “. How fast an object is getting faster”. If the velocity of an object is changing, it is accelerating!. 2016. Measuring Distance. Meter . – . international unit for measuring distance.. = 50 m. 1 mm. Calculating Speed. Speed. (S) . = distance traveled (d) / the amount of time it took (t). . S = d/t. What is acceleration?. If you’re traveling in a car at a constant speed of 50 mph, are you accelerating?. No, you’re not. . Acceleration is the rate of change of velocity. . Acceleration. In order for acceleration to occur, velocity MUST be . Experiencing Gravity’s Effects. Review: Symbols and Language. Symbol. Stands. For. Meaning. F. g. Gravitational Force. This is the magnitude. of the gravitational force on an object, which can also refer to the weight of an object.. the heavier object will fall faster than the lighter one. the lighter object will fall faster than the heavier one. both objects will fall at about the same rate. How does a fall object behave?. Aristotle’s said (A) is correct. .