velocity
speed in a particular direction
acceleration
Speeding up (change of velocity)
Terminal Velocity
when forces acting on an object is balanced (a max speed where it cant go faster)
balanced
two forces are equal so resultant force= 0N
resultant force
the sum of forces acting on an object
friction
a force caused by two objects rubbing together, usually decelarates
work done equation
force x distance= work done
work done (mechanical)
energy transferred when an object moves through a distance
drag
friction between an object and the fluid (gas or liquid) its moving through
thrust
a push that accelerates an object in given direction
tension
force acting in stretched objects such as springs, rope etc
electrostatic
force between electrically charged objects
magnetic
force between 2 magnets or magnet+iron/steel object
upthrust
upward force in liquids and gases
air resistance
friction between an object and the air its moving through
weight
force on an object due to gravity
what happens when an inelastic spring is stretched past its elastic limit?
it deforms and cant go back to original length and shape.
weight equation
mass x gravitational field strength= weight
hooke’s law
if you apply a force to a spring, it stretches and the force you apply is proportional to the extension eg. stretch twice the force and you get twice the extension
normal force (or reaction)
a force stopping you from going through surfaces
equation to find speed
distance (m) ÷ time (s) = average speed
