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Relativistic Length Measurements 4.7. Compute the contraction in length of a train 1/2 mile long when it is traveling at 100 mi/hr. Ans. 5.58 x 10-15 mi = 3.52 x 10-10 in. 4.8. At what speed must an observer move past the earth so that the earth appears like an ellipse whose major axis is six times its minor axis? Ans. 0.986c 49. An observer O' holds a 1.00 m stick at an angle of 30° with respect to the...

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A spaceship is 1600 m long when it is at rest. When it is traveling at a certain constant speed its length is measured by external observers and it is found to be 505 m. What is the speed of the spaceship in terms of the speed of light? 2.84*10^8 Hints: Objects moving at relativistic speeds shrink in the direction of motion. This is the so called Lorentz contraction. What is the relationship between the speed of the spaceship, its...

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Problem 2 please Relativity: Ar-ar- Relativistic addition of velocities: -- Problem 1. A child riding a train throws a ball with speed 2/5 of the speed of light in the +x direction, in the train's reference frame. The train itself is moving at a constant speed of 2/5 in the +x direction with respect to the ground. What is the speed of the ball as observed by someone on the ground? The speed of light is c. V=500 Problem 2....

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• ### QUESTION 1: A spaceship traveling east flies directly over the head of an inertial observer who...

QUESTION 1: A spaceship traveling east flies directly over the head of an inertial observer who is at rest on the earth's surface. The speed of the space ship can be found from this relationship: sqrt(1 - (v^2/c^2) = 1/2 ------------------------------------------------------------------------------------------------------------------------------------------------------- SHOW all CALCULATIONS and FORMULAS, for full credit to be received (Parts (a) through (e) ------------------------------------------------------------------------------------------------------------------------------------------------------ (a) The observer is 5 feet all. According to the navigator of the space ship, how tall is the observer? [Answer 5 ft]...