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Physics 1994 JAMB Past Questions

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6
An object of mass 50kg is released from a height of 2m.Find the kinetic energy just before it strikes the ground
  • A. 250J
  • B. 1000J
  • C. 10 000J
  • D. 100 000J
View Answer & Discuss (8) JAMB 1994
7
A cone in an unstable equilibrium has its potential energy
  • A. decreased
  • B. increased
  • C. unchanged
  • D. oscillating
View Answer & Discuss (9) JAMB 1994
8
Calculate the magnitude of the force required to just move a 20kg object along a horizontal surface if the coefficient of friction is 0.2. [g = 10ms-2]
  • A. 400.0N
  • B. 40.0N
  • C. 4.0N
  • D. 0.4N
View Answer & Discuss (3) JAMB 1994
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9
Calculate the velocity ratio of a screw jack of pitch 0.3cm if the length of the tommy bar is 21cm
  • A. \(\frac{1}{140}\)\(\pi\)
  • B. 14\(\pi\)
  • C. 70\(\pi\)
  • D. 140\(\pi\)
View Answer & Discuss (13) JAMB 1994
10

A force of 15N stretches a spring to a total length of 30cm. An additional force of 10N stretches the spring 5cm further. Find the natural length of the spring

  • A. 25.0cm
  • B. 22.5cm
  • C. 20.0cm
  • D. 15.0cm
View Answer & Discuss (18) JAMB 1994
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