Questions | 5 |

Focus | Principles |

Topics | Boyle's Law, Inertia, Mechanics, Net Force, Universal Gravitation |

Question Type | Questions |

Boyle's law states that "for a fixed amount of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional". Expressed as a formula, that's \(\frac{P_1}{P_2} = \frac{V_2}{V_1}\)

The more mass a substance has the more force is required to move it or to change its direction. This resistance to changes in direction is known as inertia.

Mechanics deals with **motion** and the forces that produce motion.

In mechanics, multiple forces are often acting on a particular object and, taken together, produce the net force acting on that object. Like force, net force is a **vector quantity** in that it has magnitude and direction.

Newton's Law of Univeral Gravitation defines the general formula for the attraction of gravity between two objects: \(\vec{F_{g}} = { Gm_{1}m_{2} \over r^2}\) . In the specific case of an object falling toward Earth, the **acceleration due to gravity** (g) is approximately 9.8 m/s^{2}.