Asmall glider is placed against a compressed spring at the bottom of an air track that slopes upward at an angle of 41.0 ∘ above the horizontal. the glider has mass 9.00×10−2 kg. the spring has 670 n/m and negligible mass. when the spring is released, the glider travels a maximum distance of 1.60 m along the air track before sliding back down. before reaching this maximum distance, the glider loses contact with the spring.