PHYS165 / PHYS 165 Final Exam: (Latest
Update 2026) Physics | Questions &
Answers | Grade A | 100% Correct -
Portage Learning
when an increase in the independent variable causes the depended variable to
increase this is called an
direct proportion
which statement best describes the scientific method?
A systematic process used to find a solution to a problem
__________ can be thought of collectively as objects in nature
matter
a good hypotheses is one that is both _________ and ________
plausible and testable
which of the following best describes a theory
an explanation for patterns in nature that is supported by scientific evidence and verified
multiple times by various groups of researchers; this is a broader explanation of larger
portions of nature
which of the following is a measurement of time?
the second
which of the following is a measurement of electric current?
the ampere
which refers to the agreement of several measurements among eachother?
,precise
how many sig figs are in 5,302,000?
4
how many sig figs are in 0.05021 kg?
4
how many sig figs are in 5.20x10^6 m?
3
classical physics is an excellent approximation as long as three things are true.
which of the following statements is one of these three things?
matter must be moving at speeds less than about 1% of the speed of light
besides factors that are unique to the situation, the factors contributing to
uncertainty in a measurement include:
limitations of the measuring device, the skill of the person making the measurement.
the mass of a block of wood is reported as 548 +/- 21g. What is the percent
uncertainty?
21g/548g x 100%=3.8321 ---> 3.8%
the time for a drag race is 17.5 s +/- 8.1%. what is the absolute uncertainty?
17.5s x 8.1% = 1.4175 ---> 1.4s
convert 0.7km to meters
0.7km x 1000m/1km = 700m
convert 7200 mg to grams
7200mg x 1/1000mg = 7.2g
a person runs a race in 12,710s. how many minutes is this time?
,12,710s x 1min/60s= 211.8min
what do you get when you divide 42.0m by 15.0s?
42.0m / 15.0s= 2.80m/s
in an experiment, the factors that affect the time it takes a ball to fall are being
tested. During one set of trials, the height from which the ball is dropped is
systematically increased, and the resulting time it takes the ball to fall is
measured. The entire time the same ball is used. Identify the independent,
dependent, and controlled variable.
independent: height of the drop
dependent: time it takes to fall
controlled: which ball is used
describe the role of experimentation in science
experimental data can lead to laws and theories, it can also refute currently accepted
laws and theories. information that has experimental data supporting argument is more
reliable than information that does not have supporting experimental data
you walk into your bedroom and discover your favorite gadget broken into pieces
in the floor. Use the 6 steps of the scientific method to find out what happened to
the gadget
1. identify the problem- how did my phone get broken?
2.gather information- my mother, father, and little brother could have been in my room
today.
3.create a hypotheses- my brother knocked my phone off the table and broke it.
4.expand the hypothesis- my brother also broke my IPAD yesterday
, 5.test the hypotheses- ask my brother if he broke these items
6. evaluation of the hypotheses- he said no and I believe him so I have to go back to the
beginning of the list and try again.
what is the best definition of a reference frame?
a collection of objects that are considered to be stationary that is used to describe the
motion of objects
a physical quantity that only has magnitude is known as a
vector
classify distance as a vector quantity or a scalar quantity
scalar
the rate of displacement is known as _________. It is a vector and is usually
measured in meters per second
velocity
a rock dropped off of a cliff is in free fall during its motion to the bottom of the
cliff. which of the following statements is true about the rocks motion?
the acceleration of the rock is constant as it falls
a ball is tossed vertically upward with a speed of 10.0m/s. At the peak of its path,
the ball has zero
velocity
a ball is tossed vertically with a speed of 2.50m/s. when it is caught at the same
height from which it was thrown, it will have a downward speed of about
2.50m/s
Update 2026) Physics | Questions &
Answers | Grade A | 100% Correct -
Portage Learning
when an increase in the independent variable causes the depended variable to
increase this is called an
direct proportion
which statement best describes the scientific method?
A systematic process used to find a solution to a problem
__________ can be thought of collectively as objects in nature
matter
a good hypotheses is one that is both _________ and ________
plausible and testable
which of the following best describes a theory
an explanation for patterns in nature that is supported by scientific evidence and verified
multiple times by various groups of researchers; this is a broader explanation of larger
portions of nature
which of the following is a measurement of time?
the second
which of the following is a measurement of electric current?
the ampere
which refers to the agreement of several measurements among eachother?
,precise
how many sig figs are in 5,302,000?
4
how many sig figs are in 0.05021 kg?
4
how many sig figs are in 5.20x10^6 m?
3
classical physics is an excellent approximation as long as three things are true.
which of the following statements is one of these three things?
matter must be moving at speeds less than about 1% of the speed of light
besides factors that are unique to the situation, the factors contributing to
uncertainty in a measurement include:
limitations of the measuring device, the skill of the person making the measurement.
the mass of a block of wood is reported as 548 +/- 21g. What is the percent
uncertainty?
21g/548g x 100%=3.8321 ---> 3.8%
the time for a drag race is 17.5 s +/- 8.1%. what is the absolute uncertainty?
17.5s x 8.1% = 1.4175 ---> 1.4s
convert 0.7km to meters
0.7km x 1000m/1km = 700m
convert 7200 mg to grams
7200mg x 1/1000mg = 7.2g
a person runs a race in 12,710s. how many minutes is this time?
,12,710s x 1min/60s= 211.8min
what do you get when you divide 42.0m by 15.0s?
42.0m / 15.0s= 2.80m/s
in an experiment, the factors that affect the time it takes a ball to fall are being
tested. During one set of trials, the height from which the ball is dropped is
systematically increased, and the resulting time it takes the ball to fall is
measured. The entire time the same ball is used. Identify the independent,
dependent, and controlled variable.
independent: height of the drop
dependent: time it takes to fall
controlled: which ball is used
describe the role of experimentation in science
experimental data can lead to laws and theories, it can also refute currently accepted
laws and theories. information that has experimental data supporting argument is more
reliable than information that does not have supporting experimental data
you walk into your bedroom and discover your favorite gadget broken into pieces
in the floor. Use the 6 steps of the scientific method to find out what happened to
the gadget
1. identify the problem- how did my phone get broken?
2.gather information- my mother, father, and little brother could have been in my room
today.
3.create a hypotheses- my brother knocked my phone off the table and broke it.
4.expand the hypothesis- my brother also broke my IPAD yesterday
, 5.test the hypotheses- ask my brother if he broke these items
6. evaluation of the hypotheses- he said no and I believe him so I have to go back to the
beginning of the list and try again.
what is the best definition of a reference frame?
a collection of objects that are considered to be stationary that is used to describe the
motion of objects
a physical quantity that only has magnitude is known as a
vector
classify distance as a vector quantity or a scalar quantity
scalar
the rate of displacement is known as _________. It is a vector and is usually
measured in meters per second
velocity
a rock dropped off of a cliff is in free fall during its motion to the bottom of the
cliff. which of the following statements is true about the rocks motion?
the acceleration of the rock is constant as it falls
a ball is tossed vertically upward with a speed of 10.0m/s. At the peak of its path,
the ball has zero
velocity
a ball is tossed vertically with a speed of 2.50m/s. when it is caught at the same
height from which it was thrown, it will have a downward speed of about
2.50m/s
