rotate around an axis or change direction
turn
a rigid bar that pivots on a fixed support
lever
the point about which a lever turns
pivot
turning effect of a force, calculated as the force multiplied by the distance of the force from the pivot.
moment
the standard unit of moment; other units of moment include N/cm and N/mm
newton metre (Nm)
an action that if unbalanced will change the direction of movement of an object or will change the shape of an object
force
forces acting on an object are balanced if the sizes of the forces are equal and they are in opposite direction
balanced
direction of two forces is opposite if the angle between the forces is 180 degree celsius
opposite
the path of movement of an object or the line along which a force acts
direction
forces acting on an object are unbalanced if the effects of the forces do not cancel
unbalanced
get slower, decelerate or reduce in speed
slow down
get faster, accelerate or increase in speed
speed up
an object moves in a curved path or at angle to its original movement
change direction
distance travelled per unit time
speed
use a mathematical process to derive an answer
calculate
calculated by dividing distance travelled by time taken; as actual speed may vary during the journey, the result of the calculation is an average value for the speed
average speed
