CONCEPTUAL PHYSICS 13TH EDITION
FINAL COMPREHENSIVE ASSESSMENT TEST
PAPER QUESTIONS AND SOLUTIONS
⩥ Instantaneous speed.
Answer: The speed at any instant.
⩥ Average speed.
Answer: The total distance traveled divided by the time of travel.
⩥ Velocity.
Answer: An object's speed and direction of motion.
⩥ Vector quantity.
Answer: A quantity that has both magnitude and direction.
⩥ Scalar quantity.
Answer: A quantity that has only a magnitude, not a direction.
⩥ Acceleration.
Answer: The rate at which velocity changes with time; the change in
velocity may be in magnitude, or direction, or both.
,⩥ Free fall.
Answer: Motion under the influence of gravity only.
⩥ Force.
Answer: Any push or pull exerted on an object, measured in newtons (or
pounds in the British system).
⩥ Friction.
Answer: 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.
Answer: 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.
Answer: 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.
Answer: The fundamental SI unit of mass. One kilogram (symbol kg) is
the mass of 1 liter (1 L) of water at 4°C.
⩥ Newton.
Answer: 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.
Answer: The quantity of space an object occupies.
⩥ Newton's second law.
Answer: 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.
Answer: The speed at which the acceleration of a falling object
terminates because air resistance balances gravitational force.
⩥ Terminal velocity.
Answer: Terminal speed with direction specified.
, ⩥ Newton's third law.
Answer: Whenever one object exerts a force on a second object, the
second object exerts an equal and opposite force on the first.
⩥ Components.
Answer: Mutually perpendicular vectors, usually horizontal and vertical,
whose vector sum is a given vector.
⩥ Momentum.
Answer: The product of the mass of an object and its velocity.
⩥ Impulse.
Answer: The product of the force acting on an object and the time during
which it acts.
⩥ Impulse-momentum relationship.
Answer: 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.
FINAL COMPREHENSIVE ASSESSMENT TEST
PAPER QUESTIONS AND SOLUTIONS
⩥ Instantaneous speed.
Answer: The speed at any instant.
⩥ Average speed.
Answer: The total distance traveled divided by the time of travel.
⩥ Velocity.
Answer: An object's speed and direction of motion.
⩥ Vector quantity.
Answer: A quantity that has both magnitude and direction.
⩥ Scalar quantity.
Answer: A quantity that has only a magnitude, not a direction.
⩥ Acceleration.
Answer: The rate at which velocity changes with time; the change in
velocity may be in magnitude, or direction, or both.
,⩥ Free fall.
Answer: Motion under the influence of gravity only.
⩥ Force.
Answer: Any push or pull exerted on an object, measured in newtons (or
pounds in the British system).
⩥ Friction.
Answer: 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.
Answer: 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.
Answer: 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.
Answer: The fundamental SI unit of mass. One kilogram (symbol kg) is
the mass of 1 liter (1 L) of water at 4°C.
⩥ Newton.
Answer: 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.
Answer: The quantity of space an object occupies.
⩥ Newton's second law.
Answer: 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.
Answer: The speed at which the acceleration of a falling object
terminates because air resistance balances gravitational force.
⩥ Terminal velocity.
Answer: Terminal speed with direction specified.
, ⩥ Newton's third law.
Answer: Whenever one object exerts a force on a second object, the
second object exerts an equal and opposite force on the first.
⩥ Components.
Answer: Mutually perpendicular vectors, usually horizontal and vertical,
whose vector sum is a given vector.
⩥ Momentum.
Answer: The product of the mass of an object and its velocity.
⩥ Impulse.
Answer: The product of the force acting on an object and the time during
which it acts.
⩥ Impulse-momentum relationship.
Answer: 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.
