Speed vs. Velocity
What's the symbol for speed?
The symbol is V.
What's displacement?
The overall change in position of an object.
Where is time plotted on a graph?
On the horizontal axis (x-axis)
How is the formula for displacement found?
It is found by the final position minus the initial position.
What can speed be used for?
It can be used to calculate the time it takes for a car to reach their specific destination or figuring out the average speed of a moving object.
What's the symbol for velocity?
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V
How can you tell if it's a vector quantity?
If it's given with a number for its size, a unit, and a direction.
Where is position plotted on a graph?
On the vertical axis (y-axis)
How is speed calculated?
Speed is calculated by the total distance travelled over the total time it took to travel.
V= 🔺d
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t
What can velocity be used for?
It can be used to make calculations associated to firearms. The muzzle velocity can tell us how fast a bullet is moving when it comes out of the barrel of a gun.
What are the units used for speed?
Km/h, m/s, cm/min
How can you tell if the movement is left or right?
Left is a negative number; right is a positive number.
What does a straight line on a graph represent?
Uniform motion.
How is velocity calculated?
Velocity is calculated by displacement over time.
--> -->
V= 🔺d
----
🔺t
What can distance be used for?
With engineering and physics the formula of distance is used to find the distances between the objects in outer space. It determines the trajectories for these objects.
Is velocity a scalar or vector quantity?
Velocity is a vector quantity.
What's the difference between d2 and d1?
d2 is the final position, d1 is the initial position.
What does the slope on a graph represent?
It shows the change of one thing compared to another.
What's the formula for a graph?
Slope = 🔺y
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🔺x
it's rise over run.
What are graphs used for?
Graphs are mathematical structures used to model pairwise relations between objects. Their also used in numerous fields to represent data and track change over time.
What's the difference between speed and velocity?
Velocity measures a change in position with time, speed is how fast an object moves.
What is the formula for displacement?
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🔺d= d2-d1
What does a steeper line show?
A greater magnitude of the velocity for that interval.
If you travel from Winnipeg to Flin Flon, a distance of 700km in 7 hours, your speed is?
V= 🔺 d V= 700 V= 100km/h
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t 7
What can displacement be used for?
GPS depends on displacement to give precise location information. By tracking the distance travelled by a vehicle or object from its starting position GPS can discover its current location.