Answer to Question #152862 in Physics for me

Question

A 0.60-kg block attached to a spring with force constant 130 N/m is free to move on a frictionless, horizontal surface. The block is released from rest when the spring is stretched 0.13 m. At the instant the block is released, what is (a) the force on the block and (b) its acceleration

Answer 1

a)

$$F=kx=(130)(0.13)=16.9\ N$$

b)

$$a=\frac{F}{m}=\frac{16.9}{0.6}=28.2\frac{m}{s^2}$$