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PHY 102 - Rectilinear Motion
Test 2
44
Physics
Undergraduate 3
02/17/2013

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Term
a relationship between variables that is qualitative (no numbers or equations) is called what?
Definition
a principle
Term
typically a principle which is stated with extreme precision and usually involves a mathematical relationship is called a what?
Definition
law
Term
what is in a precise relationship?
Definition
distance, time, speed
Term
graphs require what?
Definition
data
Term
in a position-time graph, slope = what?
Definition
velocity (+/- speed)
Term
in a PT graph, y-intercept is position at time = what?
Definition
0
Term
y = mx + b is what kind of relationship?
Definition
algebraic relationship
Term
what is equation 1 in a position-time graph?
Definition
x = vt + x0
Term
what is the change in distance over the change in time?
Definition
velocity
Term
does gravity increase or decrease speed?
Definition
increase
Term
how did Galileo dilute gravity?
Definition
by using inclined planes
Term
quadratic fit
Definition
best fit
Term
velocity change with time is what?
Definition
acceleration
Term
in a velocity-time graph, what does the slope equal?
Definition
the change in velocity/change in time (acceleration)
Term
In a VT graph, y-intercept equals velocity at = what?
Definition
0
Term
what is equation 2 in a velocity-time graph?
Definition
v = v0 + at
Term
in a VT graph, constant motion slope line = what?
Definition
0
Term
in a VT graph, uniformly accelerated motion the slope is constant, but does it equal 0?
Definition
no
Term
in a VT graph, non-uniformly accelerated motion the slope of tangent line at a given point gives what?
Definition
acceleration
Term
can you determine the initial position based on a VT graph?
Definition
no
Term
the area under a VT graph = what?
Definition
displacement
Term
which equation is used in constant motion?
Definition
x = vt + x0
Term
what are the 7 steps for solving a simple kinematic (motion) problem?
Definition
1. Determine type of motion – constant or uniformly accelerated motion.
2. Identify that for which you are looking.
3. Identify the information you have.
4. Find a relationship between the variables.
5. Solve the relationship for the unknown variable.
6. Insert quantities (including units) and solve (including units).
7. Check to see if your solution seems reasonable.
Term
which equations are used for uniformly accelerated motion?
Definition
1. v = v0 + at
2. x = x0 +v0t +(1/2)at squared
3. v squared - v0 squared = 2a deltax
Term
Constant motion PT graph is linear or curved?
Definition
linear
Term
Constant motion PT graph: slope is equal to what?
Definition
velocity
Term
Constant motion PT graph: area under the line is what?
Definition
meaningless
Term
Constant motion VT graph: is horizontal or non-horizontal line?
Definition
horizontal
Term
Constant motion VT graph: slope is equal to what?
Definition
acceleration/0
Term
Constant motion VT graph: the area under the line is equal to what?
Definition
displacement
Term
uniformly accelerated motion VT graph: horizontal or non-horizontal lines?
Definition
horizontal
Term
uniformly accelerated motion VT graph: slope is equal to what?
Definition
acceleration/ NOT 0
Term
uniformly accelerated motion VT graph: area under the line is equal to what?
Definition
displacement
Term
uniformly accelerated motion PT graph: linear or curved?
Definition
curved
Term
uniformly accelerated motion PT graph: tangent to the curve is equal to what?
Definition
velocity
Term
uniformly accelerated motion PT graph: area under the curve is equal to what?
Definition
it's meaningless
Term
position
Definition
magnitude and direction (vector) from some arbitrary location
Term
distance is why kind of quantity? how is it measured?
Definition
scalar -- measured along a path traveled
Term
what measures change in position?
Definition
displacement
Term
displacement is what kind of quantity?
Definition
vector?
Term
what is the straight-line distance between where one starts motion and where one ends motion?
Definition
displacement
Term
tangents to curved PT graphs are what?
Definition
instantaneous velocity
Term
v instantanious = what?
Definition
v0 + at
Term
average velocity equals what?
Definition
change in displacement/time
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