Graphing+Accelerated+Motion
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Name _Giselle Bello______ Date __02/12/24_ Class __Physics 011__
Graphing Accelerated Motion
Purpose
To create and interpret graphs of several objects that are accelerating.
Connections to What You Already Know About in Life
A car traveling along a highway usually moves at a constant speed. But when the car first enters the highway, it must speed up to get to highway speed. When you ride a bike on a flat road, you usually move at
a constant speed. However, you may slow down as you are pedaling up a hill and you speed up when you start to ride down it. These are all examples of acceleration of different types.
Vocabulary
Acceleration, velocity
Background
Position, velocity and acceleration graphs each can represent acceleration in different ways and understanding what they show is important to understanding motion of all types. Physicists use these different types of motion graphs together to show different perspectives of the motion being studied. Motion graphs are typically made of the position, velocity and acceleration data over time. They do not actually show the x-y
position in space, but show how the object is changing position based on an initial reference point. So, the position graph is just representing the distance from a reference point over time and cannot be used to deduce two-dimensional motion changes. In this activity, the motion is limited to the surface of a ramp, so the object is confined to a single line of motion. The distance of the ball from the bottom of the ramp is just the length along the ramp surface, or the hypotenuse of the triangle, not the x
and y
positions of the object.
Procedure
1.
Start Virtual Physics
and select Graphing Accelerated Motion from the list of assignments. The lab will open in the Mechanics laboratory.
2.
The laboratory will be set up with a ball on a ramp. The ramp has an angle of 30
. Click the red Recording
button to start recording data. Start the ball rolling down the ramp by clicking the Start
button. Observe what happens as the ball hits the end of the ramp. You will see a link appear in the Lab Book
that contains the position, velocity and acceleration versus time data for the ball rolling down the ramp.
3.
Click the Reset
button to move the ball back to the top of the ramp. Set the angle of the ramp to 45
using the Parameters Palette. Repeat Step 2. Repeat the experiment once more with the ramp at 60
. You should now have three data links in your lab book. Double click beside each link to label the link with the angle of the ramp.
pg. 1 - Graphing Accelerated Motion © Beyond Labz
, all rights reserved
Name _Giselle Bello______ Date __02/12/24_ Class __Physics 011__
Questions
1.
Use the r(m) data in each of the data links in your lab book to draw three position versus time graphs on the grid below. Label the horizontal axis Time (s) and the vertical axis Position (m). You will need to
scale the graph to fit your data. Use a different color for each ramp angle.
Q
a
2.
Now you will graph velocity versus time on the grid below. Label the horizontal axis Time (s) and the vertical axis Velocity (m/s). The velocity data is in the v_tot column. Use the same colors for the graphs of the same ramp angle as you did in the previous graph. Label each line with the angle of the ramp.
3.
What is the relationship between the slope of the lines and the ramp angles?
The slope can be velocity of the graph as it can compare of the speed of the ball going down the ramp,, as able to calculated the speed of the line going down the ramp, pg. 2 - Graphing Accelerated Motion © Beyond Labz
, all rights reserved
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Accelerate
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Force
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Point of reference
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Time
(1)
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is a change in position in a certain amount of time. When you
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A (4)
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7. Move away slowly then return to the origin twice as fast (both at constant velocity)
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b) Change velocity to 6 m/s for 6 seconds
c) Stand still for 3 seconds
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