In an engine, a piston oscillates with simple harmonic motion so
that its position varies according to the expression,
where x is in centimeters and t is in
seconds.
(a) At t = 0, find the position of the piston.
cm
(b) At t = 0, find velocity of the piston.
cm/s
(c) At t = 0, find acceleration of the piston.
cm/s2
(d) Find the period and amplitude of the motion.
| period | s |
| amplitude | cm |





