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2. Free fall - Wikipedia

   en.wikipedia.org/wiki/Free_fall

   In classical mechanics, free fall is any motion of a body where gravity is the only force acting upon it. A freely falling object may not necessarily be falling down in the vertical direction. An object moving upwards might not normally be considered to be falling, but if it is subject to only the force of gravity, it is said to be in free fall ...

3. Equations for a falling body - Wikipedia

   en.wikipedia.org/wiki/Equations_for_a_falling_body

   The first equation shows that, after one second, an object will have fallen a distance of 1/2 × 9.8 × 1 2 = 4.9 m. After two seconds it will have fallen 1/2 × 9.8 × 2 2 = 19.6 m; and so on. On the other hand, the penultimate equation becomes grossly inaccurate at great distances. If an object fell 10 000 m to Earth, then the results of both ...

4. Newton's law of universal gravitation - Wikipedia

   en.wikipedia.org/wiki/Newton's_law_of_universal...

   t. e. Newton's law of universal gravitation states that every particle attracts every other particle in the universe with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between their centers. Separated objects attract and are attracted as if all their mass were concentrated ...

5. Free-fall time - Wikipedia

   en.wikipedia.org/wiki/Free-fall_time

   The free-fall time is the characteristic time that would take a body to collapse under its own gravitational attraction, if no other forces existed to oppose the collapse.. As such, it plays a fundamental role in setting the timescale for a wide variety of astrophysical processes—from star formation to helioseismology to supernovae—in which gravity plays a dominant ro

6. Equivalence principle - Wikipedia

   en.wikipedia.org/wiki/Equivalence_principle

   e. The equivalence principle is the hypothesis that the observed equivalence of gravitational and inertial mass is a consequence of nature. The weak form, known for centuries, relates to masses of any composition in free fall taking the same trajectories and landing at identical times. The extended form by Albert Einstein requires special ...

7. Galileo's law of odd numbers - Wikipedia

   en.wikipedia.org/wiki/Galileo's_law_of_odd_numbers

   Galileo's law of odd numbers. In classical mechanics and kinematics, Galileo's law of odd numbers states that the distance covered by a falling object in successive equal time intervals is linearly proportional to the odd numbers. That is, if a body falling from rest covers a certain distance during an arbitrary time interval, it will cover 3 ...

8. DirecTV has a new free streaming service coming. Here's what ...

   www.aol.com/directv-free-streaming-coming-heres...

   MyFree DirecTV, scheduled to go live Nov. 15, is a free streaming service with a collection of advertising-supported live TV channels and "an extensive On-Demand library" of series, shows and ...

9. Newton's laws of motion - Wikipedia

   en.wikipedia.org/wiki/Newton's_laws_of_motion

   Newton's laws of motion are three physical laws that describe the relationship between the motion of an object and the forces acting on it. These laws, which provide the basis for Newtonian mechanics, can be paraphrased as follows: A body remains at rest, or in motion at a constant speed in a straight line, except insofar as it is acted upon by ...