Final answer:
The amount of angular movement of a particle around the origin is given by the equation θ = tan-1(5t/6) radians.
Step-by-step explanation:
The amount of angular movement of a particle around the origin can be determined by finding the angle that the position vector makes with the positive x-axis. In this case, the position vector is given as r = 6i + 5tj m/s.
To find the angle, we can use the trigonometric relationship between the x-component and the magnitude of the position vector. The angle θ is given by θ = tan-1(y/x), where y is the y-component and x is the magnitude of the position vector.
So, the amount of angular movement is given by the equation θ = tan-1(5t/6) radians.