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Home Q & A Board Science-Related Homework Help Physics
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micro01 micro01
wrote...
Posts: 68
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11 years ago
Here is a question.
You drop a rock into a well at the coast and hear a splash 3 seconds later. Given that acceleration is 9.8m/s^2 at sea level, calculate final velocity.
Final velcoity= 9.8m*3
                         29.4

I have to illustrate the velocity of the rock vs. time using a scatter graph
and
a graph showing the fall(displacement) of the rock vs. time a scatter graph.

Wont the data be the exact same?
Because at every second the velocity increases and so does the displacement.
What is right?
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wrote...
#1
11 years ago
No, the rate of change of velocity is constant.  The rate of change of displacement is not.  So, your velocity vs. time graph should be a straight line.  Your displacement vs. time graph should be a curved line up.
wrote...
#2
11 years ago
velocity is with direction, vector
displacement is the change in position without direction
which is a scalar quantity
wrote...
#3
11 years ago
no, displacement-time graphs show how far an object is from point 0 given a certain time, and this involves setting a starting position. a velocity-time graph shows the current velocity (and not the distance from something) of an object at a certain time. those are two very different things.
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