Kinematics

1

• Škola Gymnázium, Brno, Slovanské námestí 7
• Šablona III/2 Inovace a zkvalitnení výuky
  prostrednictvím ICT
• Název projektu Inovace výuky na GSN
  prostrednictvím ICT
• Císlo 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 stredních škol s CLIL
  výukou fyziky v anglictine
• Klícová slova Motion, relativity, speed,
  velocity, scalar, vector, acceleration, period,
  frequency, free fall, circular motion,
  centripetal acceleration
• Anotace Prezentace slouží k procvicení uciva
  kinematiky hmotného bodu.

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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?

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

5
Match the definition with the name

1. two perpendicular axes
2. number of revolutions per a time unit
3. length of a trajectory
4. acceleration of free fall (due to gravity)
5. change of velocity divided by time

A acceleration B distance C frequency D
Cartesian coordinate system E g
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 ? T v
frequency speedperiod acceleration angle
rad Hz m/s2 s m/s
7
Describe the terms youve learned
relativity vector distance average speed g
addition hertz magnitude acceleration
opposite vectors angular speedSI periodic
motion tangent
http//www.youtube.com/watch?vRXMRHf-rNIw
Revolution
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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.

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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?

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Exercise V
Find the acceleration of the uniformly
decelerated rectilinear motion
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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?

• Lets 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.

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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?

• Lets 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?

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That is all for now

• Thank you for your attention

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• Materiál je urcen pro bezplatné používání pro
  potreby výuky a vzdelávání na všech typech škol a
  školských zarízeních. Jakékoliv další využití
  podléhá autorskému zákonu.
• Zdroje
• Bednarík, 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 Learners
  Dictionary of Current English. 5. vyd. Oxford
  Oxford University Press, 1995. 1428 s. ISBN
  0-19-431423-5
• Autor nezarucuje funkcnost webových odkazu!