WAEC Past Questions and Answers - Page 3266

16,326.

Which of the following is not a form of money?

A.

Coins

B.

Bank notes

C.

Bank balance

D.

Bank deposit

Correct answer is C

Bank balance is the amount of money held in a bank account at a given moment. It is not a form of money, but rather the total amount of money owned by a bank customer at a particular point in time.

16,327.

From Newton's first law of motion,

A.

a body can only undergo translational motion

B.

once a body remains at rest no force acts on it

C.

the net force acting in uniform linear motion is zero

D.

a body's inertia is its weight

Correct answer is C

The key point of this law is that if there is no net force resulting from unbalanced forces acting on an object. If all the external forces cancel each other out, then the object will maintain a constant velocity.

16,328.

The maximum displacement on either side of the equilibrium position of an object in simple harmonic motion represents

A.

period

B.

amplitude

C.

wavelength

D.

frequency

Correct answer is B

No explanation has been provided for this answer.

16,329.

A body of mass 20g projected vertically upwards in vacuum returns to the point of projection after 1.2s. [g = 10ms-2]. Determine the potential energy of the body at the maximum height of its motion

A.

0.36J

B.

0.72J

C.

360.00J

D.

720.00J

Correct answer is A

P.E at max = K.E on projection

= \(\frac{1}{2}\)mv2 = \(\frac{1}{2} \times 0.02 \times 6^2 = 0.36J\)

16,330.