# Shared Flashcard Set

## Details

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

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
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 + at2. x = x0 +v0t +(1/2)at squared3. 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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