Waec Physics 1992 Past Questions and Answers

Question 1:

• WAEC 1992

Which of the following is a scalar quantity?

A. Momentum
B. Acceleration
C. Displacement
D. Distance
E. Force

Question 2:

• WAEC 1992

Which of the following is a scalar quantity?

A. Momentum
B. Acceleration
C. Displacement
D. Distance
E. Force

Question 3:

• WAEC 1992

The diagram above represents the trajectory of a projectile with an initial velocity U. Calculate the time taken to reach the maximum height. (Take g as acceleration due to gravity)

A. Usinθ/2g
B. 2Usinθ/g
C. Ucosθ/g
D. 2Ucosθ/g
E. Usinθ/g

Question 4:

• WAEC 1992

What change in velocity would be produced on a body of mass 4kg if a constant force of 16 N acts on it for2 s?

A. 0.5 ms^-1
B. 2.0ms^-1
C. 8.0 ms^-1
D. 32.0 ms^-1
E. 128.0 ms^-1

Question 5:

• WAEC 1992

Which of the following statements about solid friction is/are correct? I. Friction depends on the nature of the surfaces in contact II. Friction depends on the area of contact III. Friction always acts in the direction of motion.

A. I only
B. II only
C. III only
D. I and II only
E. I,II and III