A sinusoidal wave has an amplitude of 3cm. Time period is 1s. The wavelength is 1cm. And at x = 0, t=0 the particle is at its mean position & moving upwards. What is the equation of the wave if it is travelling along the positive x-axis?

A sinusoidal wave has an amplitude of 3cm. Time period is 1s. The wave

1.	A sinusoidal wave has an amplitude of 3cm. Time period is 1s. The wavelength is 1cm. And at x = 0, t=0 the particle is at its mean position & moving upwards. What is the equation of the wave if it is travelling along the positive x-axis?
A.	y = 3sin(2πx – 2πt)
B.	y = 3sin(2πt – 2πx)
C.	x = 3sin(2πt – 2πy)
D.	y = 3cos(π + 2πt – 2πx)
Answer» C.