Isaac Newton

Isaac Newton's contributions to the field of physics include his three laws of motion and his understanding of gravity.

Scientists' concept of gravity was pretty much nonexistent before Newton. They knew that when you dropped something, it fell to the ground, and that planets and moons orbited in a particular way, but they didn't know that those two concepts were connected.

Newton's law of universal gravitation describes the effects of gravity on the scale of our solar system.

Newton's understanding of gravity started with the observation of an apple falling from a tree.

Newton's contributions to physics completely transformed the field and provided a foundation for understanding motion and gravity.

$F = mg$

$F = \ rac{{Gm_1m_2}}{{r^2}}$

$g = \ rac{{Gm}}{{r^2}}$

$G$

$\ rac{{\ ext{N}}}{{\ ext{kg}}}$

$F = \frac{{Gm_1m_2}},{{r^2}}$

$9.8 , \text{m/s}^2$

$9.8 , \text{m/s}^2$

$\text{N} \cdot \text{m}^2/\text{kg}^2$

Net force acted on an object