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Physics Past Questions and Answers

Jamb Physics Questions

Question 6:

Which of the following is TRUE of a particle moving in a horizontal circle with constant angular velocity?

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A The energy is costant but the linear momentum varies
B The linear momentum is conatant but the energy varies
C Both energy and linear momentum are constant
D The speed and the linear velocity are both constant

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Question 7:

An object of mass 50kg is released from a height of 2m.Find the kinetic energy just before it strikes the ground

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A 250J
B 1000J
C 10 000J
D 100 000J

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Question 8:

A cone in an unstable equilibrium has its potential energy

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A Decreased
B Increased
C Unchanged
D Oscillating

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Question 9:

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]

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A 400.0N
B 40.0N
C 4.0N
D 0.4N

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Question 10:

Calculate the velocity ratio of a screw jack of pitch 0.3cm if the length of the tommy bar is 21cm

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A \(\frac{1}{140}\)\(\pi\)
B 14\(\pi\)
C 70\(\pi\)
D 140\(\pi\)

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