OAR physics
Displacement - answer the change in position of an object
Velocity - answer change in distance over time
acceleration – answer change in velocity over time
vertical velocity – answer A thrown object's acceleration downward because of gravity
(v-gt)
linear speed - answer increasing the radius increases linear speed (rotational speed in
radians * radisu)
Newton's First Law - answer An object at rest stays at rest and an object in motion stays
in motion with the same speed and in the same direction unless acted upon by an
unbalanced force.
Newton's Second Law - answerForce equals mass times acceleration
Newton's Third Law - answerFor every action there is an equal and opposite reaction
Force - answerA push or a pull (f = ma)
mass - answerthe amount of matter in an object
Gravity - answerA force of attraction between objects that is due to their masses. a
force paired from gravity are shown to be equal in magnitude and opposite in direction
weight - answerthe force of gravity on an object baased on mass
normal force - answerthe perpendicular contact force exerted by a surface on another
object
tension - answerpulling force from a cord
friction - answerthe resistance that one surface or object encounters when moving over
another.
drag force - answera force that opposes the motion of an object through a fluid (liquid or
air). A drag force is greater if the air or fluid is thicker or is moving in the direction
opposite to the direction
, static friction force - answerthe force that opposes the start of relative motion between
the two surfaces in contact (rolling friction)
Bearing friction - answerOccurs with bearings
balanced forces - answerforces acting on an object that combine and form a net force of
zero
torque - answerA TURNING OR TWISTING FORCE; THE MOMENT OF A FORCE;
THE MEASURE OF A FORCE'S TENDENCY TO PRODUCE TWISTING OR TURNING
AND ROTATION AROUND AN AXIS (t= f* radius of objection twisting)
work - answerforce x distance
two dimensional work - answerforce x displacement x cos (theta)
mechanical energy - answerthe amount of work an object can do because of the
object's kinetic and potential energies
kinetic energy - answerthe energy an object has due to its motion
gravitational potential energy - answerpotential energy related to an object's height
elastic potential energy - answerthe energy associated with objects that can be
compressed or stretched
work from gravity - answerweight x height above ground
mechanical advantage - answerthe ratio of the output force to the input force compared
to distance output to distance input
if mechanical advantage is less than 1 - answerProportionally greater effort force is
required to overcome the resistance force; proportionally less effort distance is required
to overcome the resistance force (weaker, fast)
if mechanical advantage is greater than 1 - answerProportionally less effort force is
required to overcome the resistance force; proportionally greater effort distance is
required to overcome the resistance force (stronger, slow)
mechanical advantage of a triangle/ screw - answerslant length/ rise, 2*pi*radius/length
between crests
mechanical advantage of a sqaure/ rectangle - answerlength/width
mechanical advantage of a lever - answereffort distance/ resistance distance
Displacement - answer the change in position of an object
Velocity - answer change in distance over time
acceleration – answer change in velocity over time
vertical velocity – answer A thrown object's acceleration downward because of gravity
(v-gt)
linear speed - answer increasing the radius increases linear speed (rotational speed in
radians * radisu)
Newton's First Law - answer An object at rest stays at rest and an object in motion stays
in motion with the same speed and in the same direction unless acted upon by an
unbalanced force.
Newton's Second Law - answerForce equals mass times acceleration
Newton's Third Law - answerFor every action there is an equal and opposite reaction
Force - answerA push or a pull (f = ma)
mass - answerthe amount of matter in an object
Gravity - answerA force of attraction between objects that is due to their masses. a
force paired from gravity are shown to be equal in magnitude and opposite in direction
weight - answerthe force of gravity on an object baased on mass
normal force - answerthe perpendicular contact force exerted by a surface on another
object
tension - answerpulling force from a cord
friction - answerthe resistance that one surface or object encounters when moving over
another.
drag force - answera force that opposes the motion of an object through a fluid (liquid or
air). A drag force is greater if the air or fluid is thicker or is moving in the direction
opposite to the direction
, static friction force - answerthe force that opposes the start of relative motion between
the two surfaces in contact (rolling friction)
Bearing friction - answerOccurs with bearings
balanced forces - answerforces acting on an object that combine and form a net force of
zero
torque - answerA TURNING OR TWISTING FORCE; THE MOMENT OF A FORCE;
THE MEASURE OF A FORCE'S TENDENCY TO PRODUCE TWISTING OR TURNING
AND ROTATION AROUND AN AXIS (t= f* radius of objection twisting)
work - answerforce x distance
two dimensional work - answerforce x displacement x cos (theta)
mechanical energy - answerthe amount of work an object can do because of the
object's kinetic and potential energies
kinetic energy - answerthe energy an object has due to its motion
gravitational potential energy - answerpotential energy related to an object's height
elastic potential energy - answerthe energy associated with objects that can be
compressed or stretched
work from gravity - answerweight x height above ground
mechanical advantage - answerthe ratio of the output force to the input force compared
to distance output to distance input
if mechanical advantage is less than 1 - answerProportionally greater effort force is
required to overcome the resistance force; proportionally less effort distance is required
to overcome the resistance force (weaker, fast)
if mechanical advantage is greater than 1 - answerProportionally less effort force is
required to overcome the resistance force; proportionally greater effort distance is
required to overcome the resistance force (stronger, slow)
mechanical advantage of a triangle/ screw - answerslant length/ rise, 2*pi*radius/length
between crests
mechanical advantage of a sqaure/ rectangle - answerlength/width
mechanical advantage of a lever - answereffort distance/ resistance distance
