Content Standards: 2.1, 2.2, 3.1
Instructional Technology Standards: 2.1, 4.1, 4.2, 4.3, 4.4
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Day 2 |
Day 3 |
Lab |
Reading Assignment
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Process Standards: 3.3, 3.5, 4.3,
4.7, 4.8, 5.1, 5.2, 6.1, 6.4 Content Standards: 2.1, 2.2, 3.1 Instructional Technology Standards: 2.1, 4.1, 4.2, 4.3, 4.4 |
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At what rate does gravity accelerate falling objects? |
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Read this
standardized test practice passage and answer the questions. You have six and a half minutes to complete the assignment. |
To
calculate acceleration, use the equation:
A = Vf - Vo / t |
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 Racing Engineer |
Deceleration:
Deceleration is negative acceleration and has a negative value to indicate direction. |
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Experiment
with
speed and acceleration. 
This assignment must be completed by the end of class today to receive credit.
- Use Google to find a picture of the funny car driven by John Force.
- Drag and drop this picture onto a Microsoft Word page.
- Use this type of WordArt
to type "Acceleration" to the right of the picture.
- Work both of the acceleration problems below on the Word page.
- For each problem, type the formula for acceleration.
- Re-type the formula with the numbers from the problem.
- Use the calculator on your computer to find each answer.
- Type the answer.
Acceleration Problems:Show the Word page to your science facilitator when finished.
- The christmas tree light turns green and 4.5 seconds later a top fuel dragster is traveling 300 miles per hour. Calculate the acceleration of the dragster.
- You are driving down the road at 65 miles per hour when you appy the brakes to avoid an accident. Ten seconds later you have brought the car to a stop. What was your acceleration?
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A graph of acceleration always has what shape? |
Distance - Time Graph for Acceleration:
See a
graph of acceleration. 
Experiment 
with acceleration graphs.
Computer
Assignment 202:
This assignment must be completed by the end of
class today to receive credit.
on
a blank PowerPoint page.
Keep these criteria in mind as you use PowerPoint tools to complete the
graph.
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The Earth is accelerating toward what object? |
Centripetal Acceleration: Acceleration toward the
center of a circular path. 
An
object traveling in a circle is accelerating toward the center of the
circle.
| For an object to move in a circular path, some force
must be accelerating it toward the center of the circle. While this
force may not be obvious, it is there.
In the diagram on the right, notice what happens to the object when the accelerating force is removed. The object's momentum keeps it going in a straight line. |
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What happenswhen
things spin? Centrifugal Force
An apparent force that appears only in rotating frames of reference.
Concept Understanding: 
- A car is traveling down the highway at a constant velocity. Using centripetal acceleration, describe what happens when the steering wheel is turned?
- Use the centrifugal force websites above to answer the next two questions:
- A car goes into a sharp left-hand curve at a high rate of speed. Does the passenger in the car move against the car door, or does the car door move against the passenger?
- What have you learned about circular motion that caused you to answer the way you did?
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With your table, ask your facilitator for a one-hole rubber stopper and a one meter length of string. Tie the string through the hole in the stopper and, standing in a clear space, swing the string in a flat circle over your head.
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Gravity accelerates objects near the surface of the Earth at
a rate of 9.8 m/s2.
This means that for every second
an object falls, its speed increases by 9.8 m/s.
A graph of acceleration is always a curve.
The earth orbits the sun. This means the earth is accelerating toward the sun.
