PPT-1.1 scalar, vector, distance, displacement, speed, velocity

Know The definition of scalar and vector quantities Understand Concept of distance displacement speed and velocity Be able to Determine distance and displacement in a given situation with units. Scalar quantities . have only a magnitude (amount).. Vector quantities . have a magnitude . and. a direction. . We represent them as . arrows. .. Distance. (d): . the . separation between . two . points. . In maths, words can be very important and sometimes have a more specific meaning than we first think.. For example, if we talk about ‘doing a sum’, many people think this means the same as a ‘doing a calculation’, but ‘sum’ means ‘addition’, so 7-3=4 is not strictly a ‘sum’ at all.. M. echanics. - the study of the motion of objects. we focus on the language, principles, and laws that describe and explain the motion of objects. Kinematics. is the science of describing the motion of objects using words, diagrams, numbers, graphs, and equations. . Scalar quantities . have only a magnitude (amount).. Vector quantities . have a magnitude . and. a direction. . We represent them as . arrows. .. Distance. (d): the separation between . two points. . Today’s Learning Objectives. Know the terms in this chapter.. Why is a reference point needed to describe motion?. What is the difference between distance and displacement?. How do you add vectors?. Task 1 . Get into pairs having one person facing the board (Person A) whilst the other faces away (Person B). . Person A will be shown a distance-time graph, they must explain the journey that it shows to Person B. . PHYS 243. Giancoli. , Sec 2-1, 2, 3, 4. © . 2011, . B.J. . Lieb. Analysis of a Race. All distances measured from starting line.. Time measured by a stopwatch from sound of gun.. Initial speed will be zero. . Vector Quantity. Fully described by both magnitude (number plus units) AND direction. Represented by arrows. -displacement. -velocity. -acceleration. -force. Scalar Quantity. Fully described by magnitude alone. A . vector quantity. is a quantity that has both magnitude and direction. Velocity, acceleration, and force are examples of vector quantities. . A . scalar quantity. is a quantity that has magnitude, but no direction. Time, mass, volume, and speed are examples of scalar quantities.. Essential Question: How do you calculate the displacement and velocity of an object?. What is mechanics?. The branch of physics concerned with motion and forces.. The subset of mechanics that describes motion without regard to its causes is called kinematics.. Distance vs Displacement. Distance – the total amount traveled.. Displacement – the total amount displaced from the starting point.. Solving Problems. Organize the Information. Sketch the scene. Verify Units. Lesson 11 . February 2. nd. , 2011. If a student said that they had to walk 800m to get to school today, you would only know the distance they travelled and the destination. You would not know their starting point or the directions they took to get here. Vectors, Scalars, and Motion!. Vector vs. Scalar Quantities. Scalar. . Quantities:. Only has . magnitude . Vector . Quantities:. Have . magnitude. AND . direction. Represented with an arrow. + or – indicates the direction. Definitions . Speed. : speed of an object is define as the distance traveled by it per unit time .I.e. speed of an object tells us how fast an object moves. Expression for speed : let distance traveled by an object be S in time t .then.