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Kapitel 3: Krafter

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Sammanfattning<br />

Newtons andra lag: F=ma<br />

Newtons första lag: F=0 ger a=0<br />

Newtons tredje lag: Till varje kraft<br />

hör en lika stor motriktad kraft<br />

Dessa lagar gäller i alla<br />

referenssystem som rör sig med<br />

konstant hastighet

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