PPT-Forces, Momentum, & Gravity

Chapter 3 In chapter 2 we studied motion but not its cause In this chapter we will look at both force and motion the cause and effect We will consider Newtons Newtons three laws of motion. Reading: Applied Hydrology Sections 9.1, 9.2, 9.3, 9.7, 10.1, 10.2. Reference: HEC-RAS Hydraulic Reference Manual, Version 4.1, Chapters 1 and . 2. Reading: HEC-RAS Manual pp. 2-1 to 2-12. http://www.hec.usace.army.mil/software/hec-ras/documents/HEC-RAS_4.1_Reference_Manual.pdf. Chapters 6,7:. Forces, Momentum and Conservation of Momentum. By Orpheus Mall. Feb 4. th. , 2010. I'm also forwarding my last lecture to you.  I did not cover . slides19-24 . during the 7:30 section.  You may leave the problem on . is a pull or a push.. Force. The unit of measure for force is . Newton (N). . . . . English scientist.. . (1643 – 1727) . Stations 1-10. 1. What forces are involved in making a hot air balloon move?. 1. Up and Down Forces. Lift pushes the balloon up . against . the downward force of . gravity. .. Lift is due to the density inside . nd. Law of Motion. Newton’s 2. nd. Law of Motion:. . acceleration of an object is in the same direction as the net force on the object. Newton’s 2. nd. Law of Motion . connects . force. , . mass. Frame of reference- . a system of objects that are not moving with respect to another.. Also called a . Point of Reference. - Describing and Measuring Motion. Describing Motion. Whether or not an object is in motion depends on the reference point you choose. Forces. Distinguish between contact and noncontact forces.. Explore the Law of Gravity by recognizing that every object exerts a gravitational force.. Objectives. Essential Question. What forces may hinder the motion of a soccer ball rolling across a field?. (Chapter 3). In chapter 2 we studied motion but not its cause.. In this chapter we will look at both force and motion – the cause and effect.. We will consider Newton’s:. Newton’s three laws of motion. and . Collisions. Momentum. Impulse. Impulse-Momentum . theorem. Conservation of . linear momentum. Collisions. Momentum. , p. The linear momentum . p. of an object is the product of the object’s mass . Science Question of the Day . What causes the noise when you crack your joints?. _________________________________. _________________________________. _________________________________. Gravity . Gravity is a specific kind of _____________.. Science Question of the Day . What causes the noise when you crack your joints?. Gravity . Gravity is a specific kind of force.. A force is simply the push or a pull on an object.. Can you think of some examples of pushes and pulls on objects?. Forces and Motion Chapters 11-12 Frame of reference A system of objects that are not moving with respect to one another To describe motion accurately and completely, a frame of reference is necessary. Chapter 4. 4-1 Accelerated Motion. Newton’s Second Law of Motion:. Definition: . A net force acting on an object causes the object to accelerate in the direction of the force.. The magnitude of acceleration is affected by the size of the force and the mass of the object. Forces & Gravity. Notes. Write down the words in yellow.. The words in white are discussion points, you may write these down, but are not required.. Gravity. Gravity is a . force. that pulls objects toward each other..