2.2. A rod of mass m = 1 kg flies with constant velocity past a mark which is stationary in the K frame. In the K frame, it takes the rod At= 20 ns to fly pass the mark. In the K' frame fixed to the rod, the mark moves past the rod in At' =25 ns. (a) What is the velocity of the rod in the K frame? (b) What is the proper length of the rod? (c) What is the kinetic energy of the rod in the K frame in units of its total energy? (d) What is momentum of the rod in the K frame?

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Chapter1: Units, Trigonometry. And Vectors
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2.2. A rod of mass m= 1 kg flies with constant velocity past a mark which is stationary in the K frame. In the K
frame, it takes the rod At= 20 ns to fly pass the mark, In the K' frame fixed to the rod, the mark moves past the
rod in At' = 25 ns.
(a) What is the velocity of the rod in the K frame?
(b) What is the proper length of the rod?
(c) What is the kinetic energy of the rod in the K frame in units of its total energy?
(d) What is momentum of the rod in the K frame?
Transcribed Image Text:2.2. A rod of mass m= 1 kg flies with constant velocity past a mark which is stationary in the K frame. In the K frame, it takes the rod At= 20 ns to fly pass the mark, In the K' frame fixed to the rod, the mark moves past the rod in At' = 25 ns. (a) What is the velocity of the rod in the K frame? (b) What is the proper length of the rod? (c) What is the kinetic energy of the rod in the K frame in units of its total energy? (d) What is momentum of the rod in the K frame?
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