Post Utme Physics Past Questions and Answers

Question 1016:

An object is projected with a velocity of \(80 ms ^{-1}\) at an angle of \(30^{\circ}\) to the horizontal.
The maximum height reached, assuming \(g =10 m / s\), is ____________

A. \(20 m\)
B. \(80 m\)
C. 160 m
D. 320 m
E. 40 m

Question 1017:

A cone in an unstable equilibrium has its potential energy, ____________

A. Decreased
B. Increased
C. Oscillating
D. Unchanged
E. Undulating

Question 1018:

A car of mass \(800 kg\) attains a speed of \(25 ms ^{-1}\) in 20 seconds.
The power developed in the engine is ____________

A. \(12 .5 KW\)
B. \(25.0 KW\)
C. \(1.25 MW\)
D. \(2.50 MV\)
E. \(1 MV\)

Question 1019:

When a ship sails from salt water into fresh water, fraction of its volume above the water surface will ____________

A. Decrease
B. Remain the same
C. Increase
D. Increase then decrease
E. All of the above

Question 1020:

A machine gun with a mass of \(5 kg\) fires a \(50 g\) bullet at a speed of \(100 ms ^{-1}\).
The recoil speed of the machine gun is ____________

A. \(0.5 m / s\)
B. \(3.5 m / s\)
C. \(1 m / s\)
D. \(2 m / s\)
E. \(4 m / s\)