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Physics
velocity/time graphs
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Gravity
Terms in this set (22)
acceleration
What is the rate at which velocity changes called?
deceleration
What is another name for negative acceleration?
the object is speeding up
What does positive acceleration mean (shown by an upward curving line)?
3 ways to accelerate
speeding up, slowing down, or changing direction are...
velocity
Speed in a direction is called...
velocity-time graph (or speed-time graph)
the type of graph which shows acceleration
distance-time graph
the type of graph which shows speed
shows no acceleration; the object is maintaining a constant velocity/speed
What is shown by a horizontal (flat) line on a velocity-time graph?
constant positive acceleration
What does a rising, straight, diagonal line on a velocity-time graph show?
deceleration (negative acceleration)/slowing down
What does a downward, diagonal line on a velocity-time graph show?
changing positive acceleration/increasing speed
What is shown in this graph?
constant negative acceleration/slowing down
What is shown in this graph?
the object is not moving; it is at rest
What does a straight, horizontal line at the x-axis of a velocity-time graph show?
A and C
Which part(s) of the graph shows positive acceleration?
B
Which part(s) of the graph shows constant speed/zero acceleration?
the speed did not change; there was zero acceleration
What happened between 20 and 40 seconds?
m/s
The SI unit of measurement for velocity or speed is...
m/s/s or m/s2
The SI unit of measurement for acceleration is...
distance/time
The formula for speed is...
distance/time (includes a direction)
The formula for velocity is...
change in velocity/time
The formula for acceleration is...
velocity includes a direction (but both are the amount of distance covered in a certain amount of time)
What is the difference between speed and velocity?
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