Aweight hanging from a spring will remain hanging until the weight is pulled down and released. when the weight is released the spring will bounce up and down. which of newton's laws explains why the spring will bounce? a) the third law - the bounce is the action force. b) the first law - the spring is remaining at rest. c) the second law - the weight was not pulled hard enough to keep the spring moving. d) the first law - the spring is a rest and pulling the weight supplies the force needed to start it moving.