The physics of motion have pretty general rules that we all learned from elementary to make sense of the world. ... Gravity is considered one of the foundations of physics. ... Newton's first law states that an object will continue at rest or in motion in a straight line at a constant velocity unless acted upon by an external force. ... If I didn't and you don't gauge it right, you will be having a long trip down thinking about it. ...

• Word Count: 764
• Approx Pages: 3
• Has Bibliography
• Grade Level: High School

The laws of physics are time-symmetric, which baisicly means that if there are objects called black holes into which things fall into but not get out, then there ought to be other objects that things can come out of but not fall into. ... He found that the uncertainty principle, which says that particles cannot have both a well-defined position of a particle and a well-defined velocity, allows particles to travel faster that light for a short distance, enabling particles and radiation to get out through the event horizon and escape out of a black hole. ... Don't know Much About the...

• Word Count: 905
• Approx Pages: 4
• Grade Level: High School

Scientists now believe that the current laws of physics allow us to travel though time. ... Einstein's general relativity theory explains about universal constants, this is important to understand the concepts of travel at light speed. ... Time for a stationary observer on earth and for an astronaut on a spaceship of high velocity is different. ... Carl Sagan wrote a science fiction novel about a fictional device that allowed his character to travel great distances across the universe. ... When the machines are placed in close proximity of each other the enormous amounts of energy, about ...

• Word Count: 2726
• Approx Pages: 11
• Grade Level: High School