forces Flashcards
what is a scalar quantity
quantities that only have a magnitude
what is an example of a scalar quantity
distance or speed
what is a vector quantity
quantities with both a magnitude and direction
what is an example of a vector quantity
velocity or force
what is a force
a push or a pull on an object caused by an interaction with another object .
what is a contact force
a force that occurs when two objects are touching each other
what is a non contact force
a force that can occur at a distance
what is an example of contact forces
friction , air resistance , tension
what is an example of a non contact force
gravitational potential and magnetic
what is the resultant force
the sum of the magnitudes of the forces(more than one forces) if they act in the same direction
or
the difference between the magnitude of the forces if they act in opposite directions
when are forces balanced
when the resultant force is zero
what is deformation
a change in the shape of a object caused by stretching squashing bending or twisting
why do you need more than one force to deform an object
because if it was just one it would move the object along
what is elastic deformation
where the object can go back to its original shape and size once the forces have been removed
what is inelastic deformation
where the object doesn’t return to its original shape or size when the forces are removed
