IB SEHS COMPREHENSIVE EXAMS QUESTIONS AND
ANSWERS SET A+
✔✔acceleration - ✔✔rate at which object changes its velocity (a= change in v/t)
✔✔Slope of distance vs time graph - ✔✔shows speed
✔✔Slope of speed vs time graph - ✔✔shows acceleration
✔✔forces - ✔✔it is a push or pull, acts on an object, pushes and pulls are applied to
something, and it is from the object's perspective
requires an agent: something that act/exerts power
✔✔translation (type of motion) - ✔✔motion along path. defined by net force acting on an
object
✔✔rotation (type of motion) - ✔✔motion around fixed axis. defined by torque.
✔✔deformation (type of motion) - ✔✔transformation of body from reference
configuration to current configuration. change in shape or size, due to applied force.
✔✔Spring (type of force) - ✔✔contact. push or pull. "springs back" into shape after
deformation (ex: spring)
✔✔Tension (type of force) - ✔✔contact. pulls on object. direction of rope/force pulled.
✔✔Normal (type of force) - ✔✔contact. perpendicular to surface. upward force.
✔✔Kinetic friction (type of force) - ✔✔contact. tangent to surface. opposite to velocity of
object.
, ✔✔static friction (type of force) - ✔✔contact. prevents relative motion. tangent to
surface
✔✔drag (type of force) - ✔✔contact. resistance force of FLUID
✔✔Thrust (type of force) - ✔✔contact force that is exerted when rocket exhaust by gas.
occurs when engine expels gas molecules at high speed
✔✔gravity (type of force) - ✔✔long range. pull of planet on object. vertically downwards
towards center of certain planet
✔✔electric and magnetic forces - ✔✔long range. molecular bonds between atoms and
molecules
✔✔center of mass - ✔✔point at which the mass and weight of an object are balanced in
all directions
✔✔line of gravity - ✔✔imaginary vertical line that pass through the center of gravity
down to point in base of support (if the line falls in BOS, then the object is considered
stable)
✔✔base of support (BOS) - ✔✔location on body or object where most of the weight is
supported
✔✔stability - ✔✔position of center of gravity of object affects stability (lower the center
of gravity = more stable)
✔✔factors that affect stability - ✔✔position of center of mass, size of BOS, where line of
gravity falls, mass of athlete
✔✔Newton's 1st Law - ✔✔a body continues in a state of rest or uniform motion in a
straight line unless acted upon by an external force to change that state
✔✔inertia - ✔✔the effects that a force has on an object is affected by the mass of the
object (more mass=more inertia)
✔✔Newton's 2nd Law - ✔✔acceleration of object = acceleration and mass (F=ma)
✔✔Newton's 3rd Law - ✔✔every force has an equal, opposite force (force pairs)
✔✔momentum - ✔✔quantity of motion of moving body measured as product of mass
and velocity (P=mv)
ANSWERS SET A+
✔✔acceleration - ✔✔rate at which object changes its velocity (a= change in v/t)
✔✔Slope of distance vs time graph - ✔✔shows speed
✔✔Slope of speed vs time graph - ✔✔shows acceleration
✔✔forces - ✔✔it is a push or pull, acts on an object, pushes and pulls are applied to
something, and it is from the object's perspective
requires an agent: something that act/exerts power
✔✔translation (type of motion) - ✔✔motion along path. defined by net force acting on an
object
✔✔rotation (type of motion) - ✔✔motion around fixed axis. defined by torque.
✔✔deformation (type of motion) - ✔✔transformation of body from reference
configuration to current configuration. change in shape or size, due to applied force.
✔✔Spring (type of force) - ✔✔contact. push or pull. "springs back" into shape after
deformation (ex: spring)
✔✔Tension (type of force) - ✔✔contact. pulls on object. direction of rope/force pulled.
✔✔Normal (type of force) - ✔✔contact. perpendicular to surface. upward force.
✔✔Kinetic friction (type of force) - ✔✔contact. tangent to surface. opposite to velocity of
object.
, ✔✔static friction (type of force) - ✔✔contact. prevents relative motion. tangent to
surface
✔✔drag (type of force) - ✔✔contact. resistance force of FLUID
✔✔Thrust (type of force) - ✔✔contact force that is exerted when rocket exhaust by gas.
occurs when engine expels gas molecules at high speed
✔✔gravity (type of force) - ✔✔long range. pull of planet on object. vertically downwards
towards center of certain planet
✔✔electric and magnetic forces - ✔✔long range. molecular bonds between atoms and
molecules
✔✔center of mass - ✔✔point at which the mass and weight of an object are balanced in
all directions
✔✔line of gravity - ✔✔imaginary vertical line that pass through the center of gravity
down to point in base of support (if the line falls in BOS, then the object is considered
stable)
✔✔base of support (BOS) - ✔✔location on body or object where most of the weight is
supported
✔✔stability - ✔✔position of center of gravity of object affects stability (lower the center
of gravity = more stable)
✔✔factors that affect stability - ✔✔position of center of mass, size of BOS, where line of
gravity falls, mass of athlete
✔✔Newton's 1st Law - ✔✔a body continues in a state of rest or uniform motion in a
straight line unless acted upon by an external force to change that state
✔✔inertia - ✔✔the effects that a force has on an object is affected by the mass of the
object (more mass=more inertia)
✔✔Newton's 2nd Law - ✔✔acceleration of object = acceleration and mass (F=ma)
✔✔Newton's 3rd Law - ✔✔every force has an equal, opposite force (force pairs)
✔✔momentum - ✔✔quantity of motion of moving body measured as product of mass
and velocity (P=mv)
