A 2.0 kg mass is placed against a spring of force constant 800 N/m, which has been compressed 0.22 m, as illustrated. The spring is released, and the object moves along the horizontal, frictionless surface and up a frictionless slope. Calculate: a) the maximum velocity of the mass. (3 marks) b) the speed of the mass when it reaches a vertical height of 0.50 m up the slope. (4 marks) 2.0 kg 0.22 m Ah