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What belongs in each mystery box?

Every mystery box holds the same value. Make the two sides balance.

3 × ? + 428Equal values make a level balance.

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ScienceAges 10-12Physics (O Level): Motion, forces & energy
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Linear momentum (p = mv)

Calculate the momentum of a 32 kg trolley moving at 9 m/s using p = mv.

Use p = mv to calculate the linear momentum of a moving mass in kg·m/s.

32 kg → v = 9 m/s · p = m × v = ?
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