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Friday, 03 April 2026
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An external force of magnitude 100N acts on a particle of mass 0.15kg for 0.03s. ...

An external force of magnitude 100N acts on a particle of mass 0.15kg for 0.03s. Calculate the change in the speed of the particle
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  • A 50ms-1
  • B 25ms-1
  • C 20ms-1
  • D 5ms-1
Correct Answer: Option C
Explanation:
a = \(\frac{F}{m} = \frac{100}{0.15} = 666.7\)
v = u + at
= 0 + 66.7 x 0.03
= 20m/s2

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