Physics Past Questions and Answers

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 1027:

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 1028:

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 1029:

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 1030:

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