Unit 1 Chapter 1 Exam with Rehab Al-Saidi

A sine wave is travelling in a medium. What is the minimum distance between two particles always having the same speed?

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A pendulum oscillates as shown. At which of the following positions is the potential energy equal to the total energy?

• A

• B

• C

• Not enough information

A body executes simple harmonic motion. Which one of the graphs, A to D, best shows the relationship between the kinetic energy, E_k, of the body and its distance from the centre of oscillation?

• A

• B

• C

• D

The graph shows the variation with time of the displacement of an object undergoing simple harmonic motion. At which of the following time values is kinetic energy zero?

• 0 ms

• 40 ms

• 80 ms

• 100 ms

The diagram shows a velocity-time graph for a mass moving up and down on the end of a spring. Which point represents the velocity of the mass when at the lowest point of its motion? 

• A
• B
• C
• D

What is the period of this motion? (just type the number)

What is the amplitude of this motion?

An object is attached to a spring and oscillates with amplitude A and period T, as represented on the graph above. The nature of the velocity v and acceleration a of the object at time T/4 is best represented by which of the following?

• v > 0, a > 0

• v > 0, a < 0

• v > 0, a = 0

• v = 0, a < 0

• v = 0, a = 0

The displacement (in mm) of the vibrating cone of a large loudspeaker can be represented by the equation x = 10 cos (150t), where t is the time in s. Which line, A to D, in the table gives the amplitude and frequency of the vibrations.

• A

• B

• C

• D

The frequency of the motion would be closest to..

• 0.125 Hz

• 0.16 Hz

• 2π*6 Hz

• 8 Hz