Unformatted text preview: 4. The same ball that is dropped straight down from the top of the building (and hits the ground directly below in 5 sec) is viewed from a small plane going by horizontally at 100 Km/hr. How far back does the ball hit the ground, in the plane's frame of reference? 5. An astronaut is in a spaceship zooming by the earth at 0.95 c (where c=3.0x10 8 m/s). a. In one second of the astronaut's life, how much time elapses on the earth? b. What would the diameter of the earth measure according to the astronaut (consider the diameter that is parallel to the direction of motion of the spaceship)? c. What is the measurement of the diameter perpendicular to the spaceship motion? From a portrait by Kneller (1702) National Portrait Gallery in London...
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 Spring '06
 GaryR.Goldstein
 Physics, Acceleration, Energy, Gravity, Work, General Relativity, Light, National Portrait Gallery

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