As an example, here are the first 10 sentences mentioning both the words "gravity" and "force":
- The force of gravity overcomes the nuclear forces which keep protons and neutrons from combining. Then the super cool part- children will use magnets to explore how gravity can easily be overcome by other forces- almost like defying gravity!
- On the basis of their observations and analysis, they attempt to discover and explain laws describing the forces of nature, such as gravity, electromagnetism, and nuclear interactions.
- In a gravity dam, the force that holds the dam in place against the push from the water is Earth's gravity pulling down on the mass of the dam.
- Random motion of the air molecules and turbulence provide upward forces that may counteract the downward force of gravity.
- The earth's gravity acts on air molecules to create a force, that of the air pushing on the earth.
- The pressure and frictional heat of tectonic forces cause rock to change (metamorphose)
- At subduction boundaries, gravity pulls plates back down into the mantle where rock liquefies into magma, completing the rock cycle.
- If an object falls from one point to another point inside a gravitational field, the force of gravity will do positive work on the object, and the gravitational potential energy will decrease by the same amount.
- The perpendicular component of the force of gravity is directed opposite the normal force and as such balances the normal force.
- Whereas previous ideas of motion depended on an outside force to instigate and maintain it (i.e. wind pushing a sail) Copernicus’s theories helped to inspire the concepts of gravity and inertia.