Collisions (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards

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Collisions
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Conservation principle in collisions

Momentum is conserved

Final momentum when both cars stop

00 kg m/s

Initial momentum if final is 00 kg m/s

00 kg m/s (conserved)

Momentum equation (pp, mm, vv)

p=mvp = mv

Car A & B momenta relation in this collision

Equal

Mass of Car A

10001000 kg

Mass of Car B

15001500 kg

Velocity of Car B before collision

99 m/s

Equation relating both cars' momentum

mA×vA=mB×vBm_A \times v_A = m_B \times v_B

Substituted equation for this collision

1000×vA=1500×91000 \times v_A = 1500 \times 9

Velocity of Car A (vAv_A)

13.513.5 m/s

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