PHY 111 FINAL PAPER 2026 COMPLETE
QUESTIONS AND CORRECT ANSWERS
◉ is a measure of an amount of matter. Inertia is the resistance of an
object to changes in motion. In most cases, you can use mass as a
measurement of inertia
Answer: mass
◉ is the force of gravity between the Earth (or some other celestial
body) and some object.
Answer: weight
◉ is a push or a pull. The four "action at a distance" forces are
gravity, electromagnetism, strong force, and weak force. All other
forces must be applied through physical contact. (Physical contact is
technically an application of the electromagnetic force.)
Answer: force
◉ are used to identify the relative size and direction of all forces
acting on an object. These diagrams can be used to solve for the net
force acting on an object. When determining the net force, the
horizontal components should be considered separately from the
vertical components.
Answer: force vector diagrams
,◉ is a parallel resistive contact force applied by a surface on an
object
Answer: friction
◉ notes that if an object experiences zero net force, it must also have
a constant velocity. This includes the possibility of a constant
velocity of zero (rest).
Answer: newtons 1st law
◉ notes that if the forces do not cancel, the object must experience
acceleration.
explains why acceleration due to gravity has the same value as the
gravitational field strength.
Answer: newtons 2nd law
◉ A student applies a 100 N force at an angle of 30° below the
horizontal. What is the horizontal component of the student's
applied force?
Answer: 86.6 N
◉ A student pushes a 10.0 kg box with a horizontal force of 50 N
across a rough surface. The student and the box move with a
, constant speed of 2.0 m/s. Which statement concerning the friction
force is most accurate?
Answer: friction force will = 50 N
◉ does NOT describe the motion of an object. Recall that Newton's
first law describes constant velocity motion (including constant zero
velocity), and Newton's second law describes accelerating motion.
These two laws cover all of motion.
"Every action has an opposite but equal reaction." Non-physicists
often mistake the meaning of the word "action." To remove any
confusion, a more straightforward way of stating Newton's third law
would be: "Every force has an equal sized but opposite direction
force."
"Any two objects that push or pull on each other will always push or
pull with equal amounts of force in opposite directions regardless of
motion." These "equal but opposite" forces are often referred to as
"reaction pairs."
Answer: newtons 3rd law
◉ resistive rubbing force between two objects. Friction force may be
static (if the object is not moving) or kinetic (if the object is moving).
The static friction force ranges from 0 to some maximum value,
while the kinetic friction force is constant. Friction force depends on
the relative roughness of the two surfaces as well as the force of
contact (normal force). The equation for the friction force is f = µN.
Answer: friction
QUESTIONS AND CORRECT ANSWERS
◉ is a measure of an amount of matter. Inertia is the resistance of an
object to changes in motion. In most cases, you can use mass as a
measurement of inertia
Answer: mass
◉ is the force of gravity between the Earth (or some other celestial
body) and some object.
Answer: weight
◉ is a push or a pull. The four "action at a distance" forces are
gravity, electromagnetism, strong force, and weak force. All other
forces must be applied through physical contact. (Physical contact is
technically an application of the electromagnetic force.)
Answer: force
◉ are used to identify the relative size and direction of all forces
acting on an object. These diagrams can be used to solve for the net
force acting on an object. When determining the net force, the
horizontal components should be considered separately from the
vertical components.
Answer: force vector diagrams
,◉ is a parallel resistive contact force applied by a surface on an
object
Answer: friction
◉ notes that if an object experiences zero net force, it must also have
a constant velocity. This includes the possibility of a constant
velocity of zero (rest).
Answer: newtons 1st law
◉ notes that if the forces do not cancel, the object must experience
acceleration.
explains why acceleration due to gravity has the same value as the
gravitational field strength.
Answer: newtons 2nd law
◉ A student applies a 100 N force at an angle of 30° below the
horizontal. What is the horizontal component of the student's
applied force?
Answer: 86.6 N
◉ A student pushes a 10.0 kg box with a horizontal force of 50 N
across a rough surface. The student and the box move with a
, constant speed of 2.0 m/s. Which statement concerning the friction
force is most accurate?
Answer: friction force will = 50 N
◉ does NOT describe the motion of an object. Recall that Newton's
first law describes constant velocity motion (including constant zero
velocity), and Newton's second law describes accelerating motion.
These two laws cover all of motion.
"Every action has an opposite but equal reaction." Non-physicists
often mistake the meaning of the word "action." To remove any
confusion, a more straightforward way of stating Newton's third law
would be: "Every force has an equal sized but opposite direction
force."
"Any two objects that push or pull on each other will always push or
pull with equal amounts of force in opposite directions regardless of
motion." These "equal but opposite" forces are often referred to as
"reaction pairs."
Answer: newtons 3rd law
◉ resistive rubbing force between two objects. Friction force may be
static (if the object is not moving) or kinetic (if the object is moving).
The static friction force ranges from 0 to some maximum value,
while the kinetic friction force is constant. Friction force depends on
the relative roughness of the two surfaces as well as the force of
contact (normal force). The equation for the friction force is f = µN.
Answer: friction
