part iii. confuses me.
A particle, whose is x, moves in shm such that a = - 16x. At t =0, x =1, and v=4.
i. Show that, for all positions of the particle, |v| = 4 sqroot (2-x^2)
ii. what is the particle's greatest displacement?
ii. Find x as a function of t. You may assume the general form...