A block of mass 0.35 kg can slide over a frictionless horizontal surface. It is attached to a spring whose stiffness constant is k = 14 N/m. The block is pulled 40 cm and let go.
a) What is its maximum speed?
/s
b) What is its speed when the extension is 13 cm?
m/s
c) At what position is the kinetic energy equal to the potential energy?
cm