Question

1. Describe location in the universe.

2. Compare and contrast distance, time, and speed.

3. Discuss the speed of light and the theory of special relativity.

4. Discuss inertia and momentum and the difficulties accelerating to speed of light.

5. Compare and contrast Solar Sails, Ion Engines, and Warp Drives - accelerating in space.

Answer 1

1) arth is located in the universe in the Virgo Supercluster of galaxies. A supercluster is a group of galaxies held together by gravity. Within this supercluster we are in a smaller group of galaxies called the Local Group. Earth is in the second largest galaxy of the Local Group - a galaxy called the Milky Way. The Milky Way is a large spiral galaxy. Earth is located in one of the spiral arms of the Milky Way which lies about two-thirds of the way out from the center of the Galaxy. In the Solar System - a group of eight planets, as well as numerous comets and asteroids and dwarf planets which orbit the Sun. We are the third planet from the Sun in the Solar System

2) S = D / T

T = D / S

D = T * S


Speed is equal to distance over time.

Speed is directly proportional to distance.

Speed is inversely proportional to time

4)

that inertia is a property of a system or individual particle that it always possesses by virtue of the disposition and quantity of mass and sometimes other quantities.

Momentum is a property that a system or individual particle may possess by virtue of its mass in combination with other quantities (velocity).

It is possible for a system or indivdual particle to possess inertia but no momentum.