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How fast must a rocket travel relative to the earth so thattime in the rocket "slows down" to half its rate as measured byearth-based observers? Do present-day jet planes approachsuch speeds?

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Physics 101 Mechanics

Chapter 27

Relativity

Gravitation

Rutgers, The State University of New Jersey

Simon Fraser University

University of Winnipeg

McMaster University

Lectures

03:55

In physics, orbital motion is the motion of an object around another object, which is often a star or planet. Orbital motion is affected by the gravity of the central object, as well as by the resistance of deep space (which is negligible at the distances of most orbits in the Solar System).

03:18

Sir Isaac Newton described the law of universal gravitation in his work "Philosophiæ Naturalis Principia Mathematica" (1687). The law states that every point mass attracts every single other point mass by a force pointing along the line intersecting both points. The force is proportional to the product of the two masses and inversely proportional to the square of the distance between them.

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How fast must a rocket tra…

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02:14

37.3. How fast must a rock…

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03:48

(I) A person on a rocket t…

02:45

Two rockets approach each …

01:41

A spaceship travels at 0.7…

02:36

A person on earth notices …

01:12

How fast must a spacecraft…

03:10

A spaceship is moving away…

04:25

A rocket is used to place …

01:13

An experimental jet rocket…

02:06

How fast should your space…

01:05

A rocket ship approaching …

Rocket A passes Earth at a…

02:13

A rocket is launched strai…

01:26

As a rocket ship sweeps pa…

09:36

(a) What speed is needed t…

Okay. So in this problem, to achieve the given time dilation, we need that cama is equal to two. So one over square root of one minus V squared over C squared. Sequel to two. Um, take the reciprocal. Both sides square. Both sides isolate the V, squared over C squared, and then take the square root of both sides. So this is going to be an appreciable fraction of see here that the lost city is, and so this is nowhere even close to what? Ah, normal clean, um, travels up.

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