Waec Physics 2001 Past Questions and Answers

Question 6:

• WAEC 2001

The apparent weight of a body fully immersed in water is 32N and its weight in air is 96N. Calculate the volume of the body. [Density of water = 1000kgm^-3, g = 10ms^-2]

A. 8.9 x 10^-3m³
B. 6.4 x 10^-3m³
C. 3.2 x 10^-3m³
D. 3.0 x 10^-3m³

Question 7:

• WAEC 2001

A block weighing 15N rests on a flat surface and a horizontal force of 3N is exerted on it. Determine the friction force on the block

A. 0.3N
B. 0.5N
C. 3.0N
D. 5.0N

Question 8:

• WAEC 2001

Which of the following equations represents the distance x, travelled by a body moving on a straight road with a constant speed? [The other symbol have their usual meanings]

A. X = Ut + \(\frac{1}{2}t^2\)
B. X = Ut
C. X = \(\frac{V^2 - U^2}{2a}\)
D. X = -\(\frac{1}{2} at^2\)

Question 9:

• WAEC 2001

The amplitude of the motion of a body performing simple harmonic motion decreases with time because

A. Friction force dissipate the energy of motion
B. The frequency of oscillation varies with time
C. The period of oscillation varies with time
D. Energy is supplied by some external agency

Question 10:

• WAEC 2001

The amplitude of a particle executing simple harmonic motion in 5cm while its angular frequency is 10 rad s^-1. calculate the magnitude of the maximum acceleration of the particle

A. 0.25ms^-2
B. 0.50ms^-2
C. 2.00ms^-2
D. 5.00ms^-2