5-10 Preparation for the test

Summary of chapter 5 for the test
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NatuurkundeMiddelbare schoolvwoLeerjaar 3

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Summary of chapter 5 for the test

Slide 1 - Diapositive

What you need to know from 5.1
  • From the velocity-time graph:

        - Draw it
        - use it to calculate distance en acceleration
  • (a,t)- and (s,t)-diagram... explain and use it

  • Formula of acceleration (Also if acceleration is not uniform)
        - Use it to calculate acceleration
        - Use it to calculate velocity

    Convert from
    km/h to m/s

    Slide 2 - Diapositive

    In which of the two cases is the distance covered the greatest? Give a reason for your answer.

    Slide 3 - Diapositive


    In which of the two cases is the distance covered the greatest? Give a reason for your answer.
    A
    Left
    B
    Right

    Slide 4 - Quiz

    Slide 5 - Diapositive

    timer
    3:00
    Brain accelerates uniformly from rest untill he reaches a velocity of 60 km/h. After maintaining this velocity for a while he floors the gaspedal. At a velocity of 120 km/h he needs to make an emergency stop. Draw a velocity time graph for the motion.

    Slide 6 - Diapositive

    Answer to the previous question

    Slide 7 - Question ouverte

    Emergency stop

    Slide 8 - Diapositive

    Determine the distance covered in the following diagrams.
    timer
    3:00

    Slide 9 - Diapositive

    Answer to the previous question

    Slide 10 - Question ouverte

    Slide 11 - Diapositive

    What must you know from 5.2
    • Calculate the resultant force
    • Explain the effects a resultant force has on an object i.t.o
            - acceleration
            - velocity
            - position
    • Use Newtons 3rd law
    Especially be able to calculate the reslutant force with F = ma

    Slide 12 - Diapositive

    What must you know of 5.3
    • What is inertia and how does it influence motion.
    • The second law of motion of Newton ... F = ma
            - Make calculations with the formula
            - Use the concept of resultant force
            - If you have calculated F then calculate acceleration
            - Explain how a change in Fres changes the acceleration

    Slide 13 - Diapositive

    Calculate the acceleration
    50 N
    35 N
    670 kg
    friction = 45 N
    timer
    4:00

    Slide 14 - Diapositive

    Answer to the previous question

    Slide 15 - Question ouverte

    A resultant force of 26N works on an object. Due to this the object accelerates at 0,24 m/s2. Calculate the mass of this object.
    timer
    3:30

    Slide 16 - Diapositive

    Answer to the previous question

    Slide 17 - Question ouverte

    Given:

    Asked:

    Solution:

    Slide 18 - Diapositive

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    Slide 22 - Diapositive

    and from 5.4 you must know
    • What is uniform acceleration and deceleration
    • Know when to use a negative for acceleration
    • Stopping distance = reaction distance + braking distance

    Slide 23 - Diapositive

    A cyclist cycles at 15 m/s when he brakes with an acceleration of -4 m/s2. Calculate how long it takes untill his velocity has decreased by 3 m/s.
    timer
    4:00

    Slide 24 - Diapositive

    Answer to the previous question

    Slide 25 - Question ouverte

    Given:

    Asked:

    Solution:

    Slide 26 - Diapositive

    Calculate the acceleration:

    Slide 27 - Diapositive

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    Slide 30 - Diapositive

    Good luck with studying, and if you still have questions let me know.

    Slide 31 - Diapositive

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