PHYSICS
posted by KIM .
A 0.49 kg object is attached to a spring with a spring constant 167 N/m so that the object is allowed to move on a horizontal frictionless surface. The object is released from rest when
the spring is compressed 0.12 m. Find the force on the object.

b) What is the acceleration at this instant?

F=kx=167*.12
but F= ma, solve for a.