Post Utme Physics Past Questions and Answers

Question 1231:

When a \(2 kg\) body is at a height \(5 m\) above the floor, its velocity is \(4 m / s\). What is its total energy at this height? [acceleration due to gravity \(=10 m / s \mid

A. 80 J
B .100 J
B. 116J
C. 180J

Question 1232:

An airplane increases its speed from \(36 km / h\) to \(360 km / h\) in \(20.0 s\). How far does it travel while accclerating?

A. \(4.4 km\)
B. \(1.1 km\)
C. \(2.3 km\)
D. \(1.0 km\)

Question 1233:

In the simple circuit shown in fig. I. \(F\) is a \(24 V\) battery. Calculate the current I

A. 0.1 A
B. 0.2 A
C. \(5 / 6 A\)
D. \(2.0 A\)

Question 1234:

An object is said to be in simple harmonic motion (SHM) if ____________

A. The acceleration is directly proportional to the displacement and is directed toward the equilibrium position of the object
B. The acceleration is inversely proportional to the displacement and directed toward the equilibrium position of the object
C. The displacement is directly proportional to the momentum and directed toward the equilibrium position of the object
D. The momentum is directly proportional to the displacement and directed toward the equilibrium position of the object

Question 1235:

A wheel and axle is used to raise a weight of \(600 N\) with an effort of \(300 N\). If the radii of the wheel and axle are \(50 cm\) and \(10 cm\) respectively, what is the efficiency of the system?

A. \(40 \%\)
B. \(50 \%\)
C. \(20 \%\)
D. \(10 \%\)