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Q1. Early test flights for space shuttle used a "glider" (mass of 960 {rm kg} including pilot). After a horizontal launch at 460 {rm km/h} at the height of 3800 {rm m}, glider eventually landed at a speed of 220 {rm km/h}. What will its landing speed have been in the absence of air resistance? What was the average force of air resistance exerted on it if it came in at a constant glide angle of 10{rm ^circ} to the Earth's surface?

Q2. A loudspeaker of mass 19.00 is suspended the distance of = 1.80 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.50. What is the tension in each of the cables?

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