Kinematics/Forces Flashcards
Vector
Physical Quantity that has mag and direction [examples]
Scalar
Phys quant that has mag only [examples]
Resultant force
The single vector which has same effect as og added together
Position
Vector quant that points from the reference point as the origin
Distance v.s displacement v.s speed v.s acceleration
Distance=lenggth of path travelled
Displacement=change in position
Speed=rate of change of position
Accelertion=rate of change of velocity
Tup=tdown
Time-max point=time-point of launch
Normal Force
The perp force exerted by a surface on an object in contact w/ it
Frictional Force
The force that opposes the motion of an object and acts parallel to the surface with which the object is in contact
Newton’s First Law
An object continues at a constant state of rest or uniform velocity unless it is acted upon by a net or resultant force
Inertia
Property of an object that causes it to resist to a change in its state of rest or uniform motion
Newton’s Second Law
When a net force is applied to an object of mass it accele. In the direction of the net force. The accele. Is directly proportional to the net force and inversely prop to the mass.
Newton’s third law
When object A exerts a force on object B, object B SIMULTANEOUSLY exerts an oppositely directed force of equal mag. On object A
Work
A force as the product of displacement and the component of the force parallel to the displacement
Power
The rate at which work is done
Efficiency
The ratio of output power to input power
