[填空题]
A vertical spring (ignor(ffq+m-bl ugvr+2v f0 ad :nflep-: ,pe its .ie.hx p7pm 9br6s7lrdyk cql 3i gz,sa+d:7)mass), whose spring stiffness constant is 950N/m is attached to a table and is compressed down 0.150 m. (a) What upward speed can it give to a 0.30-kgdl.sr:.m9+g6saxp )ep7ii d c7 7hrk z blq3,y ball when released? m/s
(b) How high above its original position (spring compressed) will the ball fly? m