b) A block oscillates along a straight line on a horizontal surface that is frictionless. Its displacement is given by the equation below: x=10mcos/(10rad/s)t+/2rad/ i. Calculate the frequency of the oscillation [2 marks] ii. At t=0, in which direction does the block moving? [2 marks] iii. Calculate the maximum speed, vmax acquired by the block and determine the value of x when this occurs. [3 marks| iv. Calculate the magnitude of the maximum acceleration amax of the block and determine the value of x when this occurs. [3 marks]