Post Utme Physics Past Questions and Answers

Question 406:

Which of the following statements best defines a couple?

A. Two parallel and opposite another.
B. Two equal forces acting in the same direction.
C. Two parallel and opposite forces acting on a body whose lines of action do not coincide
D. None of the above.

Question 407:

A force F = (5i + 3j)N acts on a body and causes a displacement r (7i- j)m.
Determine the work done.

A. 53J
B. 32 J
C. 35J
D. 21 J.

Question 408:

A force of 0.6 N acts on a body of mass 40 g. initially at rest. What is the resulting acceleration?

A. 35 m/s2.
B. 40 m/s2
C. 15 m/s2
D. 25 m/s2

Question 409:

Which of the following statements is not correct about stable equilibrium?

A. The body returns to its original position when it is slightly displaced and released
B. A slight displacement raises its centre of gravity.
C. A slight displacement lowers its centre of gravity.
D. A slight displacement does not raise or lower it's centre of gravity.

Question 410:

A body is projected vertically upwards with a velocity of 9.78 m/s.
How high does it travel before it comes to rest momentarily at the top of it's motion?. (g=9.78 m/s2)

A. 2.45 m
B. 4.89 m
C. 6.89 m
D. 9.78m.