A change in velocity over a given time period.
Relating to airflow.
The study of projectil emotion.
The force that opposes the forward motion of an object in airflow. In most cases, its opposite is lift.
A principle, formulated by Sir Isaac Newton (1642-1727), which states that an object at rest will remain at rest, and an object in motion will remain in motion, at a constant velocity unless or until outside forces act upon it.
Any force that resists the motion of body in relation to another with which it is in contact.
The tendency of an object in motion to remain in motion, and of an object at rest to remain at rest.
A term describing a streamlined flow, in which all particles move at the same speed and in the same direction. Its opposite is turbulent flow.
An aerodynamic force perpendicular to the direction of the wind. In most cases, its opposite is drag.
A measure of inertia, indicating the resistance of an object to a change in its motion—including a change in velocity.
A curve generated by a point moving such that its distance from a fixed point on one axis is equal to its distance from a fixed line on the other axis. As a result, between any two points on the parabola there is a proportional relationship between x and y values.
Any object that has been thrown, shot, or launched.
A measure of rocket fuel efficiency—specifically, the mass that can be lifted by a particular type of fuel for each pound of fuel consumer (that is, the rocket and its contents) per second of operation time. Figures for specific impulse are rendered in seconds.
The rate at which the position of an object changes over a given period of time. Unlike velocity, direction is not a component of speed.
A principle, which like the first law of motion was formulated by Sir Isaac Newton. The third law states that when one object exerts a force on another, the second object exerts on the first a force equal in magnitude but opposite in direction.
The path of a projectile in motion, a parabola upward and acrossspace.
A term describing a highly irregular form of flow, in which a fluid is subject to continual changes in speed and direction. Its opposite is laminar flow.
The speed of an object in a particular direction.
The internal friction in a fluid that makes it resistant to flow.
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