Conceptual Physics 2026 |
Study Guide, Practice
Questions, Answers,
Rationales & Exam Review
| Complete Ethics Study
Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,Speed How fast an object moves; the distance traveled per unit of time.
Instantaneous speed The speed at any instant.
Average speed The total distance traveled divided by the time of travel.
Velocity An object's speed and direction of motion.
Vector quantity A quantity that has both magnitude and direction.
Scalar quantity A quantity that has only a magnitude, not a direction.
Acceleration The rate at which velocity changes with time; the change in velocity may be in
magnitude, or direction, or both.
Free fall Motion under the influence of gravity only.
Force Any push or pull exerted on an object, measured in newtons (or pounds in the
British system).
Friction The resistive force that opposes the motion or attempted motion of an object either
past another object with which it is in contact or through a fluid.
Mass The quantity of matter in an object. More specifically, it is the measure of the inertia
or sluggishness that an object exhibits in response to any effort made to start it,
stop it, deflect it, or change in any way its state of motion.
Weight The force that an object exerts on a supporting surface (or, if suspended, on a
supporting rope), which is often, but not always, due to the force of gravity.
, Kilogram The fundamental SI unit of mass. One kilogram (symbol kg) is the mass of 1 liter (1
L) of water at 4°C.
Newton The SI unit of force. One newton (symbol N) is the force that will give an object of
mass 1 kg an acceleration of 1 m/s2.
Volume The quantity of space an object occupies.
Newton's second law The acceleration of an object is directly proportional to the net force acting on the
object, is in the direction of the net force, and is inversely proportional to the mass
of the object.
Terminal speed The speed at which the acceleration of a falling object terminates because air
resistance balances gravitational force.
Terminal velocity Terminal speed with direction specified.
Newton's third law Whenever one object exerts a force on a second object, the second object exerts
an equal and opposite force on the first.
Components Mutually perpendicular vectors, usually horizontal and vertical, whose vector sum is
a given vector.
Momentum The product of the mass of an object and its velocity.
Impulse The product of the force acting on an object and the time during which it acts.
Impulse-momentum relationship Impulse is equal to the change in the momentum of the object that the impulse acts
upon. In symbolic notation,
Ft = Δ mv
Law of conservation of momentum In the absence of an external force, the momentum of a system remains
unchanged. Hence, the momentum before an event involving only internal forces is
equal to the momentum after the event:
mv(before event) = mv(after event)
Study Guide, Practice
Questions, Answers,
Rationales & Exam Review
| Complete Ethics Study
Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,Speed How fast an object moves; the distance traveled per unit of time.
Instantaneous speed The speed at any instant.
Average speed The total distance traveled divided by the time of travel.
Velocity An object's speed and direction of motion.
Vector quantity A quantity that has both magnitude and direction.
Scalar quantity A quantity that has only a magnitude, not a direction.
Acceleration The rate at which velocity changes with time; the change in velocity may be in
magnitude, or direction, or both.
Free fall Motion under the influence of gravity only.
Force Any push or pull exerted on an object, measured in newtons (or pounds in the
British system).
Friction The resistive force that opposes the motion or attempted motion of an object either
past another object with which it is in contact or through a fluid.
Mass The quantity of matter in an object. More specifically, it is the measure of the inertia
or sluggishness that an object exhibits in response to any effort made to start it,
stop it, deflect it, or change in any way its state of motion.
Weight The force that an object exerts on a supporting surface (or, if suspended, on a
supporting rope), which is often, but not always, due to the force of gravity.
, Kilogram The fundamental SI unit of mass. One kilogram (symbol kg) is the mass of 1 liter (1
L) of water at 4°C.
Newton The SI unit of force. One newton (symbol N) is the force that will give an object of
mass 1 kg an acceleration of 1 m/s2.
Volume The quantity of space an object occupies.
Newton's second law The acceleration of an object is directly proportional to the net force acting on the
object, is in the direction of the net force, and is inversely proportional to the mass
of the object.
Terminal speed The speed at which the acceleration of a falling object terminates because air
resistance balances gravitational force.
Terminal velocity Terminal speed with direction specified.
Newton's third law Whenever one object exerts a force on a second object, the second object exerts
an equal and opposite force on the first.
Components Mutually perpendicular vectors, usually horizontal and vertical, whose vector sum is
a given vector.
Momentum The product of the mass of an object and its velocity.
Impulse The product of the force acting on an object and the time during which it acts.
Impulse-momentum relationship Impulse is equal to the change in the momentum of the object that the impulse acts
upon. In symbolic notation,
Ft = Δ mv
Law of conservation of momentum In the absence of an external force, the momentum of a system remains
unchanged. Hence, the momentum before an event involving only internal forces is
equal to the momentum after the event:
mv(before event) = mv(after event)
