US Navy OAR
Mass - answer The matter in the universe (atoms and Molecules) is characterized in
terms of its mass. This is measured in Kilograms in the International system of units
(SI).
Density - answer the amount of mass that occupies a given volume of space.
Force - answer an application of energy to anobject with the intent of changing its
position (mainly its acceleration).
Displacement of an object - answer is simply the distance it travels.
Velocity of an object - answeris the distance it travels in a unit of time, such as miles as
miles per hour or meters per second.
The equation for Velocity - answervelocity = distance/time
Velocity - answerincludes speed and direction
Vector - answerarrow pointing in the direction of motion, with its length proportional to
its magnitude.
the total distance travled is calculated usesing what therom - answerPythagrean
Theorem
Pythagorean Theorem - answera²+b²=c²
Accleration - answerchange in its velocity in a given period of time
Acceleration equation - answerchange in velocity/time required
Newton's First Law - answeran object at rest will stay at rest, an object that is moving
will stay moving unless disturbed by an un balenced force.
Newton's Second Law - answerForce = mass x acceleration
Newton's Third Law - answerFor every action there is an equal and opposite reaction
Mass is a property - answerof an object that remains the same while its intacts, no
matter where its located.
Impulse equation - answerJ=Ft
, Torque - answera force that causes rotation
Energy - answerthe energy of a system results from the forces acting in it and is
considered its ability to work.
Work - answerthe energy required to do work (which are the same) is calculated as the
product force and distance traveled along the line of action of the force.
Potential energy - answeran object is equal to the work that's required to lift it from its
original elevation.
potential energy equation - answerPE=mgy
total energy - answeris the sum of the kinetic energy and the potential energy, both of
which are measured in foot-pounds or newton meters.
Its important to remember what about energy? - answerIt can be neither created not
destroyed, so it can only change from one form to another.
Work (second definition) - answerthe release of potential energy of a system can be
used to do work
Joule - answerSI unit of energy
power - answeris defined as the rate at which work is done, or the time it takes to do a
given amount of work.
bouyancy - answerThe ability of a fluid to exert an upward force on an object placed in it
If steel is denser than water, how can a steel ship float? - answerthe steel ship floats
because its hallow. the volume of the water is displaced by its steel shell (hull) is
heavier than the entire weight of the ship and its contents (which includes a lot of empty
space)
Immiscible - answerdescribes two or more liquids that do not mix with each other due to
density.
continuity equation - answerQ=VxA
Bernoulli's Principle - answerA principle that explains how the pressure of a moving fluid
varies with its speed of motion. An increase in the speed of movement causes a
decrease in the fluids pressure.
Mass - answer The matter in the universe (atoms and Molecules) is characterized in
terms of its mass. This is measured in Kilograms in the International system of units
(SI).
Density - answer the amount of mass that occupies a given volume of space.
Force - answer an application of energy to anobject with the intent of changing its
position (mainly its acceleration).
Displacement of an object - answer is simply the distance it travels.
Velocity of an object - answeris the distance it travels in a unit of time, such as miles as
miles per hour or meters per second.
The equation for Velocity - answervelocity = distance/time
Velocity - answerincludes speed and direction
Vector - answerarrow pointing in the direction of motion, with its length proportional to
its magnitude.
the total distance travled is calculated usesing what therom - answerPythagrean
Theorem
Pythagorean Theorem - answera²+b²=c²
Accleration - answerchange in its velocity in a given period of time
Acceleration equation - answerchange in velocity/time required
Newton's First Law - answeran object at rest will stay at rest, an object that is moving
will stay moving unless disturbed by an un balenced force.
Newton's Second Law - answerForce = mass x acceleration
Newton's Third Law - answerFor every action there is an equal and opposite reaction
Mass is a property - answerof an object that remains the same while its intacts, no
matter where its located.
Impulse equation - answerJ=Ft
, Torque - answera force that causes rotation
Energy - answerthe energy of a system results from the forces acting in it and is
considered its ability to work.
Work - answerthe energy required to do work (which are the same) is calculated as the
product force and distance traveled along the line of action of the force.
Potential energy - answeran object is equal to the work that's required to lift it from its
original elevation.
potential energy equation - answerPE=mgy
total energy - answeris the sum of the kinetic energy and the potential energy, both of
which are measured in foot-pounds or newton meters.
Its important to remember what about energy? - answerIt can be neither created not
destroyed, so it can only change from one form to another.
Work (second definition) - answerthe release of potential energy of a system can be
used to do work
Joule - answerSI unit of energy
power - answeris defined as the rate at which work is done, or the time it takes to do a
given amount of work.
bouyancy - answerThe ability of a fluid to exert an upward force on an object placed in it
If steel is denser than water, how can a steel ship float? - answerthe steel ship floats
because its hallow. the volume of the water is displaced by its steel shell (hull) is
heavier than the entire weight of the ship and its contents (which includes a lot of empty
space)
Immiscible - answerdescribes two or more liquids that do not mix with each other due to
density.
continuity equation - answerQ=VxA
Bernoulli's Principle - answerA principle that explains how the pressure of a moving fluid
varies with its speed of motion. An increase in the speed of movement causes a
decrease in the fluids pressure.
