Pitch of the sound depends on the frequency [Higher frequency -> Higher pitch]
Loudness of the sound depends on the amplitude [Higher amplitude (energy) ->Louder sound]
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The speed-time graph of Car A and Car B, along a straight road over 4 seconds is shown below.
a) Calculate the acceleration of Car A and Car B over the 4 seconds.
Ans: a of Car A = 3 ms-2 and a of Car B =0.75 ms-2
Car A overtakes Car B at time t seconds.
b) Derive two separate expressions for the velocities of Car A and Car B at the point when Car A overtakes Car B, in terms of t.
Ans: Va = 3t and Vb = 3 + 0.75t
c) Calculate the time t when Car A overtakes Car B.
Ans: t = 2.67s
Solutions for (a) and (b)
Solutions for (c)
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