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38 Cards in this Set
- Front
- Back
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Length is measured in ________ using a ______________
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meters, meterstick
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Time is measured in _______ using a ______________.
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seconds, stopwatch
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Mass is measured in ______ using a __________.
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kilograms, triple beam balance
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Angles are measured in __________ using a _______________.
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degrees, protractor
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Forces are measured in ________ using a ________ ________,
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Newtons, spring scale
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A spring scale must be _________ before using it to take measures. How is this done?
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zeroed, by turning knob at the top
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Temperature is measured in ________ or _______ using a ___________.
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Kelvin or Celsius, thermometer
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Volume is measured in _________ using _______ _______ or ___________.
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milliliters, graduated cylinders or beakers
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What is the most important lab rule?
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if there is equipment sitting out on your work space when you enter the lab, do not touch it until you have been instructed on its use.
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__________ is how far an object travels in a certain amount of time or how fast an object is traveling
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speed
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Speed is measure in units of ____/______.
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meters/second or m/s
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Define velocity
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how far an object travels in a certain amount of time in a specific direction
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Velocity is measured in units of ________/__________.
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meters/second or m/s
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What are the different ways direction can be expressed?
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North, south, east or west
up & down left & right forward & backward |
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How do we determine direction?
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Frame of reference
Reference point |
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Define average speed. What is the formula for calculating it?
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The speed necessary to travel a distance in an amount of time
speed = total distance/time |
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What is instantaneous speed?
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The speed of an object at a specific point in time
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________ _______ is when an object is traveling at the same speed in the same direction for a given period of time
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Constant velocity
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What shape is the graph for a car moving at a constant velocity?
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A constant velocity vehicle produces a linear graph. The slope is equal to the velocity of the vehicle.
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For constant velocity:
v = |
d/t
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for constant velocity: d =
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vt
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for constant velocity: t=
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d/v
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In a motion map a dot represents ________. There is one dot every __________. And an _________ indicates moving from one location to another.
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location, second, arrow
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Time always goes on the __-axis.
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x
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What shape is the graph for an object that is speeding up?
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a parabola
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Any change in velocity is called _____________
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acceleration
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name 2 ways velocity can change
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change in speed, change in direction
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How do you calculate acceleration (the rate of change in velocity of an object)?
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acceleration = change in velocity/change in time
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What are the relationships for changing velocity?
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a = v/t or
v = at d =½ at² |
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A falling object undergoes an acceleration due to what force?
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the gravity of the earth.
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What did Galileo prove when he dropped objects of diferent weights from the tower of Pisa?
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all objects fall at the same rate
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Any time an object is falling through the atmosphere, there is ____ _____________.
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air resistance
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Objects falling in a vacuum will be accelerated at the same rate regardless of
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mass
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What are the relationships for free fall?
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d =½ gt²
v = gt |
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Distance is measured in ______.
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meters (m)
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Time is measured in ______.
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seconds (s)
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Velocity and speed are measured in ______/_________.
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meters/second (m/s)
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Acceleration is measured in ______/_____² .
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meters per second squared
m/s² |
