The motion of a wave propagating along a string is described by the equation Y = 2sin(10 t - x). Find it's particle velocity.

mass and volume are the answers you are looking for

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west