13. A block is released from rest and slides down a ramp that has an angle of 30 degrees to the horizontal. At the bottom of the ramp there is a spring. The block is 12kg and the ramp is frictionless. There is a spring at the bottom of the ramp. The spring is compressed by 2cm with a force of 270N. If the block slides down the ramp and hits the spring and momentarily stops, the spring is compressed by 5.5crn. a) How far does the block move down the ramp from its rest position to where the block stops? b] What is the speed of blockjust as it touches the spring