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8 Energy – forces doing work

8 Energy – forces doing work

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Question 7

A cosmic dust grain is detected by a sensor onboard an interstellar probe.

The kinetic energy of this dust grain is 1.8 × 10-5 J.

The mass of the grain is estimated to be 4.0 × 10-12 kg.

Calculate the velocity of the dust grain.

[3]
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8 Energy – forces doing work Questions

  1. GCSE
  2. /Physics
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