A 200 gram block is attached to a spring with a spring constant of 8 N/m. The spring oscillates horizontally on a frictionless surface. Its velocity is 80 cm/s when x = - 4.2 cm.

a. What is the amplitude of oscillation?

b. What is the block’s maximum acceleration?

c. What is the block’s position when the acceleration is maximum?

d. What is the speed of the block when x = 2.5 cm?

See answer I wrote later