Forces and Motion Flashcards
drag forces
act to slow down objects moving through fluids
force of friction
the force that resists motion when the surface of one object comes in contact with the surface of another
resultant force
difference between forward and backward force
kinetic energy
energy something possesses due to its motion
non - renewable resource
a resource that will run out one day
gravitational potential energy
energy stored in raised objects
elastic potential energy
energy stored as a result of applying a force to deform an elastic object
thermal energy
the energy contained within a system that is responsible for its temperature
law of conservation of energy
energy is never created or destroyed
how do you calculate speed
speed = distance / time
how do you calculate distance
distance = speed x time
how do you calculate time
time = distance / speed
how do you calculate the mean (average) speed
mean speed = total distance travelled / total time taken
relative speed
the speed of one moving body in relation to another
how do you calculate the moment of the force
moment of the force = force x perpendicular distance from the pivot
(Nm) = (N) x (m)
