Class Activity 1.4 (e.g. 3) by Ethan & Aaron

(a) Calculate the speed of the wave pulse.
To calculate SPEED of wave pulse = Distance/Time
                                                         = 0.9 / 1.69
                                                         = 0.53 m/s
(b) Is it possible to change the speed of the wave pulse (of the same width)?
These are the following results we obtained.

Pulse Width	Time taken to travel over 0.9m
50	1.86s
10	1.58s

Let us calculate the SPEED
the wave pulse of pulseWidth of 50 = Distance/Time
                                                    = 0.9/1.86
                                                    = 0.48m/s (to 3 s.f)

Let us calculate the SPEED
the wave pulse of pulseWidth of 10 = Distance/Time

                                                    = 0.9/1.58

                                                    = 0.57m/s (to 3 s.f)

Compare;

Pulse Width	Speed (m/s)
30	0.53
50	0.48
10	0.57

Looking at the results, you would realise that;
when I increase the pulse width to 50, it became slower;
when I increase the pulse width to 10, it became faster.
∴
You would discover a relationship between the pulse width and speed of the pulse.
The smaller the pulse width, the faster it goes;
the bigger the pulse width, the slower it goes.