Physics 121: Exam 1 Question and
answers correctly solved 2025
force - correct answer ✔what is exerted by a spring when it is displaced from
equilibrium
weight is a - correct answer ✔downward force
weight - correct answer ✔the force of gravity on a mass
weight is measure in - correct answer ✔pounds and Newtons
mass - correct answer ✔the amount of stuff in somethin
what is mass measured in - correct answer ✔kg
at the surface of the earth, weight is proportional to _____ - correct answer
✔mass
W=gM - correct answer ✔Fg=mg
gravitational constant - correct answer ✔9.8 m/s^2 downward
force of gravity changes with _______ - correct answer ✔distance
if a force does not produce a motion, that means ... - correct answer ✔the
upward and downward force are in equilibrium
,the sum of the angles in a triangle are - correct answer ✔180
tan = - correct answer ✔sin / cos
how is an object supported by a table - correct answer ✔the table exerts as
much force as it needs to in order to hold the object up // not partnered to its
own weight but rather the weight of the object
where does weight act? - correct answer ✔at the center of an object
** velocity and acceleration are NOT forces so they don't touch the object on a
free body diagram - correct answer ✔
acceleration - correct answer ✔net result of all forces acting on an object //
initial input of force in order to get an object to have a constant velocity
change in velocity per unit of time // m/s^2
velocity - correct answer ✔the speed of something in a given direction //
vector because it has magnitude and direction
friction doesn't depend on what? - correct answer ✔area
bigger coefficient of friction means? - correct answer ✔more friction
the longer you fall.. - correct answer ✔the faster you go
, what is a unique feature of gravity - correct answer ✔acceleration is the
same for all objects
why does a feather fall slower than a coin - correct answer ✔HAVE the same
acceleration but due to friction forces in the air, the feather hits the floor later
each second an object falls ... - correct answer ✔its velocity increased by 9.8
m/s^2
when normal forces = weight - correct answer ✔no acceleration
what is another way to measure the weight of an object if the acceleration is
zero - correct answer ✔measure the Normal Forces required to hold it up
how do you calculate total force - correct answer ✔the difference between
your weight down and the normal force pointing up
F total = N - mg
what would be the total force if you are standing on a scale - correct answer
✔F total = ma
total force when you are accelerating - correct answer ✔F total = N actual -
mg = ma
distance is always a _________ number - correct answer ✔positive
answers correctly solved 2025
force - correct answer ✔what is exerted by a spring when it is displaced from
equilibrium
weight is a - correct answer ✔downward force
weight - correct answer ✔the force of gravity on a mass
weight is measure in - correct answer ✔pounds and Newtons
mass - correct answer ✔the amount of stuff in somethin
what is mass measured in - correct answer ✔kg
at the surface of the earth, weight is proportional to _____ - correct answer
✔mass
W=gM - correct answer ✔Fg=mg
gravitational constant - correct answer ✔9.8 m/s^2 downward
force of gravity changes with _______ - correct answer ✔distance
if a force does not produce a motion, that means ... - correct answer ✔the
upward and downward force are in equilibrium
,the sum of the angles in a triangle are - correct answer ✔180
tan = - correct answer ✔sin / cos
how is an object supported by a table - correct answer ✔the table exerts as
much force as it needs to in order to hold the object up // not partnered to its
own weight but rather the weight of the object
where does weight act? - correct answer ✔at the center of an object
** velocity and acceleration are NOT forces so they don't touch the object on a
free body diagram - correct answer ✔
acceleration - correct answer ✔net result of all forces acting on an object //
initial input of force in order to get an object to have a constant velocity
change in velocity per unit of time // m/s^2
velocity - correct answer ✔the speed of something in a given direction //
vector because it has magnitude and direction
friction doesn't depend on what? - correct answer ✔area
bigger coefficient of friction means? - correct answer ✔more friction
the longer you fall.. - correct answer ✔the faster you go
, what is a unique feature of gravity - correct answer ✔acceleration is the
same for all objects
why does a feather fall slower than a coin - correct answer ✔HAVE the same
acceleration but due to friction forces in the air, the feather hits the floor later
each second an object falls ... - correct answer ✔its velocity increased by 9.8
m/s^2
when normal forces = weight - correct answer ✔no acceleration
what is another way to measure the weight of an object if the acceleration is
zero - correct answer ✔measure the Normal Forces required to hold it up
how do you calculate total force - correct answer ✔the difference between
your weight down and the normal force pointing up
F total = N - mg
what would be the total force if you are standing on a scale - correct answer
✔F total = ma
total force when you are accelerating - correct answer ✔F total = N actual -
mg = ma
distance is always a _________ number - correct answer ✔positive
