Multiple-choice questions may continue on the next column or page - find all choices before answering. 001 (part 1 of 3) 10.0 points A block starts at rest and slides down a fric- tionless track except for a small rough area on a horizontal section of the track (as shown in the figure below). It leaves the track horizontally, flies through the air, and subsequently strikes the ground. The acceleration of gravity is 9.81 m/s. . 497 g - U 9.81 m/s2 K 2.1 m 1.1 m M=0.2 K 4.92 m At what height h above the ground is the block released? Answer in units of m. 002 (part 2 of 3) 10.0 points What is the the speed of the block when it leaves the track? Answer in units of m/s. 003 (part 3 of 3) 10.0 points What is the total speed of the block when it hits the ground? Answer in units of m/s