OAR Mechanical
Displacement definition - answerthe change in position of an object
Velocity definition - answerrate of change of position
Average velocity formula - answerdisplacement/time
Average speed formula - answertotal distance traveled / change in time
Accelleration - answerThe rate at which velocity changes
Average acceleration formula - answerchange in velocity/change in time
Projectile motion is caused by - answerthe downward force of gravity and an initial
forward velocity
Gravity acceleration on Earth - answer9.8 m/s^2
linear speed formula - answerradius x rotational speed
simple rotation - answeran object rotates around a point at a constant speed
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 force there is an equal and opposite force
Force - answermass x acceleration
Acceleration - answerforce/mass
Mass - answerforce / accelleration
Mass definition - answerthe amount of matter in an object
Force definition - answera push or pull on an object
Force has both __________________ and ___________________. -
answermagnitude; direction
, Acceleration of an object - answerdirectly proportional to the force acting on the object
and inversely proportional to the mass of the object.
Gravity definition - answerA force of attraction between objects that is due to their
masses.
Pulling force - answerforces on objects point toward opposite directions
Weight - answermass x gravity
Normal force definition - answerthe force perpendicular to a contact surface
EX: Box sitting on a wedge
Tension definition - answera pulling force like that from a cord or rope
Friction definition - answerthe resistance that one surface or object encounters when
moving over another.
Static friction force - answera force that keeps an object at rest and must be overcome
to start moving the object
Kinetic friction force - answera force that acts between moving surfaces
Rolling friction - answerfriction that occurs when an object rolls over a surface
Bearing friction - answerKinetic friction between the wheel and the object around which
it rotates
Drag force - answerfriction when an object is moving through the air or a liquid
*Always acts in the opposite direction to the fluid
Balanced forces - answerEqual forces acting on an object in opposite directions
(Equilibrium, Force =0)
(When at 0, object is not accelerating)
Angular position = - answerangle
Angular velocity equation - answerchange in angle/change in time
angular acceleration equation - answerchange in angular velocity/time
Torque definition - answera turning or twisting force
Torque equation - answerradius x force
or
force x distance perpendicular to the force from the center of rotation
Displacement definition - answerthe change in position of an object
Velocity definition - answerrate of change of position
Average velocity formula - answerdisplacement/time
Average speed formula - answertotal distance traveled / change in time
Accelleration - answerThe rate at which velocity changes
Average acceleration formula - answerchange in velocity/change in time
Projectile motion is caused by - answerthe downward force of gravity and an initial
forward velocity
Gravity acceleration on Earth - answer9.8 m/s^2
linear speed formula - answerradius x rotational speed
simple rotation - answeran object rotates around a point at a constant speed
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 force there is an equal and opposite force
Force - answermass x acceleration
Acceleration - answerforce/mass
Mass - answerforce / accelleration
Mass definition - answerthe amount of matter in an object
Force definition - answera push or pull on an object
Force has both __________________ and ___________________. -
answermagnitude; direction
, Acceleration of an object - answerdirectly proportional to the force acting on the object
and inversely proportional to the mass of the object.
Gravity definition - answerA force of attraction between objects that is due to their
masses.
Pulling force - answerforces on objects point toward opposite directions
Weight - answermass x gravity
Normal force definition - answerthe force perpendicular to a contact surface
EX: Box sitting on a wedge
Tension definition - answera pulling force like that from a cord or rope
Friction definition - answerthe resistance that one surface or object encounters when
moving over another.
Static friction force - answera force that keeps an object at rest and must be overcome
to start moving the object
Kinetic friction force - answera force that acts between moving surfaces
Rolling friction - answerfriction that occurs when an object rolls over a surface
Bearing friction - answerKinetic friction between the wheel and the object around which
it rotates
Drag force - answerfriction when an object is moving through the air or a liquid
*Always acts in the opposite direction to the fluid
Balanced forces - answerEqual forces acting on an object in opposite directions
(Equilibrium, Force =0)
(When at 0, object is not accelerating)
Angular position = - answerangle
Angular velocity equation - answerchange in angle/change in time
angular acceleration equation - answerchange in angular velocity/time
Torque definition - answera turning or twisting force
Torque equation - answerradius x force
or
force x distance perpendicular to the force from the center of rotation
