Waec Physics 2009 Past Questions and Answers

Question 11:

• WAEC 2009

The period of a simple pendulum of length 80.0cm was found to have doubled when the length of the pendulum was increased by X. Calculate X.

A. 26.7cm
B. 40.0cm
C. 160.0cm
D. 240.0cm

Question 12:

• WAEC 2009

A body of mass 5kg movimg with a velocity of 30ms^-1 due east is suddenly hit by another body and changes its velocity to 50ms^-1 in the same direction. Calculate the magnitude of the impulse received.

A. 100Ns
B. 150Ns
C. 250Ns
D. 400Ns

Question 13:

• WAEC 2009

Electric energy is measured in

A. Ampere
B. Coulomb
C. Kilowatt-hour
D. Kilowatt

Question 14:

• WAEC 2009

A stone of mass 0.5kg is dropped from a height of 12m. Calculate its maximum kinetic energy. [g = 10ms^-1]

A. 3.0J
B. 6.0J
C. 30.0j
D. 60.0J

Question 15:

• WAEC 2009

A machine of efficiency 80% is used to lift a box. If the effort applied by the machine is twice the weight of the box. Calculate the velocity ratio of the machine

A. 0.50
B. 0.63
C. 0.80
D. 1.60