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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Derived physical quantities and their units

Jamb Physics Questions - Derived physical quantities and their units

Question 1:
When taking a penalty kick, a footballer applies a force of 30.0N for a period of 0.05s. if the mass of the ball is 0.075kg, calculate the speed with which the ball moves off.
  • A 4.50ms<sup style='font-size: smaller;'>-1</sup>
  • B 11.25ms<sup style='font-size: smaller;'>-1</sup>
  • C 20.00ms<sup style='font-size: smaller;'>-1</sup>
  • D 45.00ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 2:
A vehicle of mass m is driven by an engine of power P from rest. Find the minimum time it will take to acquire a speed
  • A \(\frac{mv^2}{t}\)
  • B \(\frac{mv^2}{2t}\)
  • C \(\frac{mv}{t}\)
  • D \(\frac{mv}{2t}\)
View Answer & Explanation
Question 3:
A train of mass 1600 kg attains a speed of 25 ms\(^{-1}\) in 20 seconds. The power developed in the engine is?
  • A 2.5 KW
  • B 80 KW
  • C 25 KW
  • D 50 KW
View Answer & Explanation