Waec Physics 2005 Past Questions and Answers

Question 11:

• WAEC 2005

A body starts from rest and accelerates uniformly at 5ms^-1 until it attains a velocity of 25ms^-1. Calculate the time taken to attain this velocity

A. 2.5s
B. 5.0s
C. 10.0s
D. 125.0s

Question 12:

• WAEC 2005

The frequency of a swinging pendulum is the

A. Number of complete oscillations the pendulum makes in a second
B. Number of amplitudes the bob makes in a second
C. Angle the bob swings through in a second
D. Distance the bob covers in a second

Question 13:

• WAEC 2005

Which of the following about an object performing simple harmonic motion is correct? Its acceleration

A. Is maximum at the extreme ends
B. Is constant and directed towards a fixed point
C. Is zero when it is displayed from the equilibrum position
D. Varies linearly with the displacement from a fixed point and is directed towards the fixed point

Question 14:

• WAEC 2005

A body of mass 5kg moving with a velocity of 10ms^-1 collides with a stationary body of mass 6kg. If the two bodies stick together and move in the same direction after their collision, calculate their common velocity

A. 4.55ms^-1
B. 12.00ms^-1
C. 30.00ms^-1
D. 50.00ms^-1

Question 15:

• WAEC 2005

Fuel was consumed at a steady rate of 5.0 x 10^-2kg per second in a rocket engine and ejected as a gas with a speed of 4 x 10³ms^-1. Determine the thrust on the rocket

A. 20N
B. 80N
C. 200N
D. 800N