12. Acceleration

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Acceleration is a change in

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In which case do you think acceleration is involved?
A train that is traveling at a constant speed of 500 mi/hr in a straight line or a person that is walking in circles at a constant rate of 1 step per second.

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Acceleration is a scalar quantity

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Explain what an acceleration graph tells you, and how do you construct one.

 The graph below describes the motion of a fly that starts out going left. 

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Identify section(s) where the fly moves with constant velocity

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Identify section(s) where the fly moves right slowing down.

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When is the fly at rest?

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Which acceleration graph accurately represents the movement of the fly

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Select the graph that matches the SPEED statement.

The speed of this object is decreasing
An object moves away but comes back to where it was
This object is not moving (in a d/t graph)
An object is moving at a constant speed in a d/t graph

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Select the graph that matches the ACCELERATION statement.

This object has stopped (shown in an acceleration graph)
An object is decelerating
An object is accelerating
An object is traveling at a constant speed (in an acceleration graph)

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Match the graph to the statement.

Item 1

It is very cold in the Antarctic. A penguin stays huddled with a group of other penguins to stay warm.
Georgy ran at a constant speed of 3 m/s.
Andrea increases her speed from 0 m/s to 5 m/s in order to not be late to class.
Michael walks at a speed of 1 m/s from science class to math class.

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Match the graph to the statement.

A fox looks for a burrow to sleep in a speed of 2 m/s. He stops briefly when he hears a noise. Then he resumes looking at 2 m/s. Finally the fox finds a burrow and curls up to take a nap.
An eagle flies from its nest at a speed of 4 m/s. She see a mouse and increases her speed to 8 m/s. She loses sight of the mouse and turns around and flies back to its nest at a speed of 9 m/s.
Angel walks from class to the cafeteria. He increases his speed from 0 m/s to 2 m/s. Angel hears a scholar yelling his name so he slows down and eventually stops. Once his friend catch up he increases his speed back to 2 m/s.
A wolf increases its speed from 0 m/s to 6 m/s. It then slows down its speed to 4 m/s and stays moving at 4 m/s

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Graph the speed and the acceleration (both are line graphs) given the data attached.

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Graph the following "story" using a LINE graph:
A car leaves home accelerating for 10 min until it reaches a speed of 15 m/min. Then it travels for 10 minutes at that speed. As the journey continues, the car accelerates for 10 minutes until it reaches a speed of 25 m/min. At that point the car slows down, taking 20 minutes to come to a full stop.

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A car leaves home accelerating for 10 min until it reaches a speed of 15 m/min. Then it travels for 10 minutes at that speed. As the journey continues, the car accelerates for 10 minutes until it reaches a speed of 25 m/min. At that point the car slows down, taking 20 minutes to come to a full stop.
Think! what is the final velocity, the initial velocity and the time for this particular segment?

What is the rate of acceleration between 0 min and 10 min?

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A car leaves home accelerating for 10 min until it reaches a speed of 15 m/min. Then it travels for 10 minutes at that speed. As the journey continues, the car accelerates for 10 minutes until it reaches a speed of 25 m/min. At that point the car slows down, taking 20 minutes to come to a full stop.
Think! what is the final velocity, the initial velocity and the time for this particular segment?

What is the rate of acceleration between 20 min and 30 min?

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A car leaves home accelerating for 10 min until it reaches a speed of 15 m/min. Then it travels for 10 minutes at that speed. As the journey continues, the car accelerates for 10 minutes until it reaches a speed of 25 m/min. At that point the car slows down, taking 20 minutes to come to a full stop.
Think! what is the final velocity, the initial velocity and the time for this particular segment?

What is the rate of acceleration between 30min and 50 min?

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Graph this movement using a LINE graph. Make sure you label your axis.
A train travels at 30 miles/hour for 5 seconds. It speeds up to 50 miles/hour in 20 seconds. Then the train brings its speed back down to 30 miles/hour in 10 seconds.

As you graph, THINK - Did the car start at zero?

Acceleration is a change in

In which case do you think acceleration is involved?A train that is traveling at a constant speed of 500 mi/hr in a straight line or a person that is walking in circles at a constant rate of 1 step per second.

Acceleration is a scalar quantity

Explain what an acceleration graph tells you, and how do you construct one.

Identify section(s) where the fly moves with constant velocity

Identify section(s) where the fly moves right slowing down.

When is the fly at rest?

Which acceleration graph accurately represents the movement of the fly

Select the graph that matches the SPEED statement.

Select the graph that matches the ACCELERATION statement.

Match the graph to the statement.

Match the graph to the statement.

Graph the speed and the acceleration (both are line graphs) given the data attached.

Graph this movement using a LINE graph. Make sure you label your axis. A train travels at 30 miles/hour for 5 seconds. It speeds up to 50 miles/hour in 20 seconds. Then the train brings its speed back down to 30 miles/hour in 10 seconds.As you graph, THINK - Did the car start at zero?

In which case do you think acceleration is involved?
A train that is traveling at a constant speed of 500 mi/hr in a straight line or a person that is walking in circles at a constant rate of 1 step per second.

Graph this movement using a LINE graph. Make sure you label your axis.
A train travels at 30 miles/hour for 5 seconds. It speeds up to 50 miles/hour in 20 seconds. Then the train brings its speed back down to 30 miles/hour in 10 seconds.

As you graph, THINK - Did the car start at zero?