In the physics lab an air-track glider of mass m is on a frictionless air track inclined at an angle 0 as is shown in the adjacent figure. a) Find the acceleration of the air-track glider. D L nH Courtesy of Physics Lab Manual b) Supposed the air-track glider is released from rest at the top of the incline and the distance from the glider's front bumper to the bottom of the incline is D (or what is the same, the distance from the top of the incline to the glider's back bumper is D). How long does it take the front bumper to reach the bottom of the incline, and what is the glider's speed as it arrives there?