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 Dynamics of particles
  (dynamika hmotných bodu)
• Název DUMu Linear momentum
• Kód VY_32_INOVACE_FY.3.04
• Datum 27. 9. 2013
• Cílová skupina Žáci stredních škol s CLIL
  výukou fyziky v anglictine
• Klícová slova Linear momentum, change in linear
  momentum
• Anotace Prezentace slouží k zavedení fyzikální
  veliciny hybnost. Na zacátku prezentace se
  opakují první dva Newtonovy zákony.

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Dynamics of particles

• 4. Linear momentum

3
Find words

• rita neli (adjective)
• a blance
• fotr nici
• fotr nece
• a sestre nic
• saturn let
• via tygr

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Complete sentences

• A body is at or in uniform . unless made
  to its by forces
• The of a body is directly to the net force
  acting on the body, and inversely to its mass
• If there are more acting on an object, and
  they are , i.e. their is a zero vector,
  then it is the same as if are no forces at
  all

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Exercise I

• A car of a mass 1000 kg speeds up with an
  acceleration of 5 m/s2. A force of resistance of
  a magnitude 1000 N acts against the motion.
  Calculate the magnitude of the pull of the
  engine.
• http//www.youtube.com/watch?vAFnoBrhOR4U 242

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Linear momentum I

• For a body (a particle) we define linear momentum
  (hybnost) as the product of its mass and its
  velocity
• Linear momentum is a vector quantity. Its
  direction is equal to the direction of velocity
• SI unit of momentum, kg.m/s (kilogram metre per
  second), is a derived unit

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Exercise II

• A car of a mass 1000 kg speeds up from rest with
  an acceleration of 3 m/s2. Calculate the
  magnitude of the linear momentum after ten
  seconds of the motion.

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Linear momentum II

• If bodys velocity changes from toduring a
  time interval, then linear momentum changes from
  to
• Change in the linear momentum is
• If p1 p2, does it mean ?

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Law of acceleration

• If we use the change in the linear momentum,
  Newtons second law of motion can be presented
  this way

• There is no acceleration in the formula now -)

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Revision

• How do we define linear momentum?
• What do you know about the direction of the
  linear momentum?
• What is the unit of linear momentum? Is it a
  base or derived unit?
• Write down the formula of the law of acceleration
  with use of the change in the linear momentum.
  Read it

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Find pairs with similar meanings
assume, turn, catch up, lift, resultant, take
effect, deal with, speed up, dependence,
aiming, act on, travel, accelerate,
study, overtake, function, suppose, cover, net
force, revolution, heading, elevator, grow,
increase
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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!