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Physics Semester 1
ReviewMade by Julia, Lauren and Emily
True
True or false: Accuracy is the extent to which a reported
measurement approaches the true value of the quantity
measured.
Precision
The degree of exactness or refinement of a measurement is
called…
When air resistance is so great that
acceleration stops
What is terminal velocity?
Acceleration
What is change in velocity?
True
True or false: X and Y forces cannot mix in any physics
equation.
In the center of the object
When drawing a diagram, where should the origin of the x and y
axes be drawn?
Newtons (N)
What is weight measured in?
False: Newton’s Laws are Law of Acceleration, Law of Inertia, and
Law of Motion
True or false: One of Newton’s laws is called Law of Relations.
Force
A push or a pull is called what?
For finding angles and sides of right
triangles
What is SOH CAH TOA used for?
Normal Force
What is the force that the ground exerts on your feet
called?
False: Vertical and forward motion are both independent
True or False: vertical motion is dependent on forward
motion
Weight
The force of friction increases when WHAT is added?
Law of Inertia - an object at rest will stay at rest
unless acted upon by an outside force
What is Newton’s Law of Inertia?
Five
How many sig figs are in 3.0133?
True
True or false: The force of friction always points parallel to the
surfaces in contact.
If there is no air resistance then heavier objects do
NOT fall more slowly; they fall at equal rates.
Do heavier objects fall more slowly than lighter objects?
True
True or false: In order to effectively complete metric conversions, you should use dimensional analysis.
Centripetal acceleration is the acceleration an object experiences as it travels a certain
velocity along an arc. Centrifugal force is the imaginary force an unrestrained object
experiences as it moves around an arc.
What is the difference between centripetal acceleration and
centrifugal acceleration?
Displacement
What is change in position called?
False
True of false: Static friction exists when you are sliding.
Vectors have magnitude and direction; scalars have only magnitude
What is the difference between vectors and scalars?
a resisting/retarding force
What is friction?
Meters per seconds squared (m/s )
What unit is used to measurement acceleration (a) and centripetal
acceleration (ac)?
2
for every action there is an equal and opposite
reaction
What is Newton’s Law of Interaction?
Yes because 10N>4N
Will a 5 N box slide if it is being pushed with 10 N but pulled
with 4 N?
displacement, velocity,
acceleration, Force
What are some vectors quantities?
the mass of an object determines its resistance to movement; the
greater mass of an object impedes the overall rate of
acceleration
What is the Law of Acceleration?
Kilograms (kg)
What unit is mass measured by?
Weight
Provide a synonym for The Force of Gravity
length, area, volume, speed, mass, density
What are some scalars quantities?
acceleration towards the center; how quickly
an object’s direction changes
What is centripetal acceleration?
True
True or False: A heavy mass is hanging from a string. If the mass is
at rest, it will tend to remain at rest.
Divide the diameter in half.
d=2r
How can you determine the radius if only a diameter is given?
equal
You push against the wall and it makes you move backwards. The force you pushed against the wall must be ______ to the force the
wall reacted with
Radians per second (rad/s)
What unit is angular speed (ω) measured by?
The rate of change in displacement of an object moving in a
circular path
What is tangential velocity?
When it is at the same height
When an object is thrown upwards, when is its ascending speed equal
to its descending speed?
One
How many sig figs are in 0.001?
Radians (rad)
What unit is angular displacement (theta) measured
by?
Good Luck!