EXAMS COMPLETE COVERAGE WITH
VERIFIED ANSWERS AND SUCCESS
ASSURANCE 2026
‣ vectors . Answer: forces with magnitude and direction
‣ scalars . Answer: forces with magnitude but no direction
‣ contact forces . Answer: requires contact eg friction
‣ non contact forces . Answer: doesnt require contact eg gravity
‣ mass and weigth . Answer: directly proportional
‣ weight . Answer: mass x gravitational field strength
‣ gravitational field strength on earth . Answer: 9.81
‣ resultant force . Answer: the overal force acting on an object
‣ if a resultant force moves and object . Answer: work is done
,‣ scale drawings . Answer: triangular drawings, finding the hypotenuse
usually using pythagoras or trigonometry
‣ object in equilibrium . Answer: when to forces acting on the object are
balanced
‣ extension . Answer: directly proportional to force
‣ (spring) force . Answer: spring constant x extension
‣ limit of proportionality/elasticity . Answer: when an elastic object gets
stretched too much and it become plastic
‣ moment of a force . Answer: force x perpendicular distance from pivot
to the line of action of the force
‣ levers . Answer: make it easier to do work and increase the distance
form a pivot
‣ gears . Answer: transmit rotational effects
‣ pressure of an obeject . Answer: force ÷ area
, ‣ pressure in fluids . Answer: height above point X density of fluid X
gravitational field strength
‣ pressure of a fluid . Answer: a force is exerted at right angles to any
surface in contact with the fluid
‣ a floating object . Answer: weight + upthrust
‣ objects in water . Answer: experience upthrust
‣ atmospheric pressure . Answer: decreases with height
‣ an object will sink... . Answer: if it displaces a volume of water less
than the objects weight
‣ an object will float... . Answer: if it displaces a volume of water more
or equal to the objects weight
‣ distance . Answer: is scalar
‣ displacement . Answer: is a vector
‣ speed . Answer: how fast something is going