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Oefentoets met antwoorden systematische natuurkunde hoofdstuk 8 arbeid en energie 5VWO

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Oefen met opgaven over harmonische trillingen, golven, interferentie en resonantie. Perfecte voorbereiding op je proefwerk! Inclusief uitwerkingen. Systematische Natuurkunde 5vwo

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Uploaded on
March 12, 2025
Number of pages
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Written in
2024/2025
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Vwo 5 Hoofdstuk 8 Eindtoets 0


Opgave A
In februari 2000 deed Jian Hua een recordpoging om een auto met een massa van 4,0·103 kg aan
zijn oor voort te trekken. In figuur 1 zie je de richting van de trekkracht tijdens de gehele
recordpoging.




Figuur 1




Figuur 2

In het (v,t)-diagram van figuur 2 is weergegeven hoe de snelheid van de auto tijdens de
recordpoging afhangt van de tijd.
Gedurende de eerste 6 s is zijn trekkracht constant.
1 3p Is de arbeid die de trekkracht verricht van 0 tot 3 s groter dan, kleiner dan of gelijk aan de
arbeid die de trekkracht verricht van 3 tot 6 s? Licht je antwoord toe.

Neem aan dat de wrijvingskracht gedurende de hele beweging gelijk is aan 2,3·102 N.
Op t = 12 s is de snelheid van de auto constant.
2 3p Bepaal de trekkracht op de auto na 12 s.

Na 18 s stopt Jian met trekken.
3 3p Bepaal hoever de auto nog doorrolt.




© ThiemeMeulenhoff bv – versie 1.1 – vanaf examen mei 2025 Pagina 1 van 2
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