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ScienceAges 16–18English

Physics calculation talk

Short calculations with explicit units. Explain the equation and substitution before revealing the answer.

Worksheet Studio originals · Teacher review recommended before teaching

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  1. A 2 kg mass accelerates at 3 m/s^2. What resultant force acts on it?
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    6 N, using F = ma

  2. A resistor has 12 V across it and a current of 3 A. What is its resistance?
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    4 ohms, using R = V / I

  3. A wave travels at 20 m/s with frequency 5 Hz. What is its wavelength?
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    4 m, using wavelength = speed / frequency

  4. A 4 kg object moves at 2 m/s. What is its kinetic energy?
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    8 J, using KE = 0.5mv^2

  5. How much work is done when a constant 5 N force moves an object 4 m in the force direction?
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    20 J, using work = force x distance

  6. A device transfers 120 J in 6 s. What is its average power?
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    20 W, using power = energy / time