Lecture Notes - 1) A spaceship fires its rocket engines,...

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1) A spaceship fires its rocket engines, which exert a force in the direction of motion that varies with time as shown in the graph. rocket mass m = 10000 kg initial velocity v o = 100 m/s [R] a) What impulse acts on the rocket? b) What is the final velocity of the rocket? t (s) F (kN) 10 20 50 60
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2) A 5-gram marble moving at 5 m/s [N] collides with a 2-gram marble moving at 3 m/s [N]. a) If the final velocity of the 2- gram marble is 7 m/s [N]…. i. What is the final velocity of the 5-gram marble? ii. How much heat is produced in this collision? b) If the marbles collide and stick together…. i. What is their mutual final velocity? ii. How much heat is produced by their collision? Please don’t round off your answer. 5 2
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2) (continued) A 5-gram marble moving at 5 m/s [N] collides with a 2-gram marble moving at 3 m/s [N]. c) If the final velocity of the 2- gram marble is 4.45 m/s [N]…. i.
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Lecture Notes - 1) A spaceship fires its rocket engines,...

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