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Škola: Gymnázium, Brno, Slovanské náměstí 7

Škola: Gymnázium, Brno, Slovanské náměstí 7 Šablona: III/2 – Inovace a zkvalitnění výuky prostřednictvím ICT Název projektu: Inovace výuky na GSN prostřednictvím ICT Číslo projektu: CZ.1.07/1.5.00/34.0940 Autor: RNDr. Bc. Miroslav Hruška

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Škola: Gymnázium, Brno, Slovanské náměstí 7

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  1. Škola: Gymnázium, Brno, Slovanské náměstí 7 Šablona: III/2 – Inovace a zkvalitnění výuky prostřednictvím ICT Název projektu: Inovace výuky na GSN prostřednictvím ICT Číslo projektu: CZ.1.07/1.5.00/34.0940 Autor: RNDr. Bc. Miroslav Hruška Tematická oblast: Kinematics of a particle (kinematika hmotného bodu) Název DUMu: Revision of kinematics Kód: VY_32_INOVACE_FY.2.20 Datum: 20. 8. 2013 Cílová skupina: Žáci středních škol s CLIL výukou fyziky v angličtině Klíčová slova: Motion, relativity, speed, velocity, scalar, vector, acceleration, period, frequency, free fall, circular motion, centripetal acceleration Anotace: Prezentace slouží k procvičení učiva kinematiky hmotného bodu.

  2. Kinematics of a particle 20. Revision of kinematics

  3. Fill a proper word in “……” • Motion and …… of a body is …… to an other object • Uniform motion has a constant …... • …… is the length of a …… • Free fall is a motion of freely …… bodies in a …… with acceleration due to …… • ad is called …… acceleration • At uniform circular motion …… is changing

  4. True or false? At uniformly accelerated motion the graph of distance as a function of time is a straight line km/h is a SI unit Unit of frequency is hertz Scalar is an oriented straight line segment Centripetal acceleration is 10 m/s2

  5. Match the definition with the name A acceleration | B distance | C frequency | D Cartesian coordinate system | E g | two perpendicular axes number of revolutions per a time unit length of a trajectory acceleration of free fall (due to gravity) change of velocity divided by time

  6. Make groups of three • Choose a quantity from the first circle,then find its symbol in the second one, and symbol of its unit in the third one a| f | ϕ T| v frequency speed|period acceleration angle rad | Hz m/s2 | s m/s

  7. Describe the terms you’ve learned relativity | vector | distance average speed | g | addition hertz | magnitude | acceleration opposite vectors | angular speedSI | periodic motion | tangent http://www.youtube.com/watch?v=RXMRHf-rNIw Revolution

  8. Exercises I and II • A car went from Prague to Brno. At half past eight the driver had a look at the odometer and saw 55 km. At a quarter to ten he read 140 km. Calculate the average speed of the car between half past eight and a quarter to ten. • A motorbike covered a certain distance in two minutes. The average speed was 90 km/h. Find the distance.

  9. Exercises III and IV • At 11 a.m. a motorbike left A at a speed of 70 km/h. At 1 p.m. a car set off at 120 km/h to catch the biker up. At what time did he succeed? • A tractor going at 10 m.s-1 and a car going at 20 m.s-1 are at a distance of 15 km aiming to each other. What distance will the tractor cover before they meet?

  10. Exercise V Find the acceleration of the uniformly decelerated rectilinear motion:

  11. Exercises VI and VII • A swimmer is swimming at 0.8 m/s. She is heading perpendicularly to the banks of a river flowing at 0.6 m/s? What is the magnitude of the resulting velocity? • Let’s assume the Earth revolves around the Sun along a circular path with a radius of 150 million km. Find its speed and centripetal acceleration relative to the Sun.

  12. Exercises VIII and IX • What distance will an object have covered when it reaches a speed of 100 km/h in free fall on Earth? • Let’s assume we have dropped a body freely from the third floor of the Eiffel Tower. What minimum time does it take to travel 200 m?

  13. That is all for now Thank you for your attention

  14. Materiál je určen pro bezplatné používání pro potřeby výuky a vzdělávání na všech typech škol a školských zařízeních. Jakékoliv další využití podléhá autorskému zákonu. Zdroje: • Bednařík, M., Široká, M. Fyzika pro gymnázia, Mechanika. Dotisk 3. vyd. Praha: Prometheus, 2004. 288 s. ISBN 80-7196-176-0 • Hornby, A. S. Oxford Advanced Learner’s Dictionary of Current English. 5. vyd. Oxford: Oxford University Press, 1995. 1428 s. ISBN 0-19-431423-5 Autor nezaručuje funkčnost webových odkazů!

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