Collisions (OCR GCSE Physics A (Gateway Science Suite)): Quizzes

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Collisions
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What is the total momentum after both cars come to rest in the collision?

00 kg m/s

What physics principle applies to collisions?

Momentum is conserved

If momentum after collision is 00 kg m/s, what was momentum before the collision?

00 kg m/s

In this head-on crash, what must be true about each car's momentum before collision?

They must be equal in magnitude

What is the equation for momentum?

p=mvp = mv

Which equation shows momentum of Car A equals momentum of Car B?

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

Substituting values, what equation do we get for Car A's velocity?

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

What is the velocity of Car A before the collision?

13.513.5 m/s

What is the momentum of Car B before collision (mB=1500m_B = 1500 kg, vB=9v_B = 9 m/s)?

1350013500 kg m/s

To find vAv_A from 1000×vA=135001000 \times v_A = 13500, what do we divide by?

10001000

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