Concepts of Motion

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# Concepts of Motion - PowerPoint PPT Presentation

Concepts of Motion. Particle Model Motion Diagrams Pictorial R representation Vectors. Reading Question. For class today I read. Zero per cent 20 per cent 40 per cent 60 per cent 80 per cent 100 per cent. Reading Question. I did not tell a lie on the last question. True False.

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### Concepts of Motion

Particle Model

Motion Diagrams

Pictorial Rrepresentation

Vectors

For class today I read

• Zero per cent
• 20 per cent
• 40 per cent
• 60 per cent
• 80 per cent
• 100 per cent

I did not tell a lie on the last question

• True
• False

What is a “particle”?

1. Any part of an atom

2. An object that can be represented as a mass at a single point in space

3. A part of a whole

4. An object that can be represented as a single point in time

5. An object that has no top or bottom, no front or back

What is a “particle”?

1. Any part of an atom

2. An object that can be represented as a mass at a single point in space

3. A part of a whole

4. An object that can be represented as a single point in time

5. An object that has no top or bottom, no front or back

What quantities are shown on a complete motion diagram?

1. The position of the object in each frame of the film, shown as a dot

2. The average velocity vectors (found by connecting each dot in the motion diagram to the next with a vector arrow)

3. The average acceleration vectors (there is one acceleration vector linking each two velocity vectors)

4. All of the above

What quantities are shown on a complete motion diagram?

1. The position of the object in each frame of the film, shown as a dot

2. The average velocity vectors (found by connecting each dot in the motion diagram to the next with a vector arrow)

3. The average acceleration vectors (there is one acceleration vector linking each two velocity vectors)

4. All of the above

The pictorial representation of a physics problem consists of

1. a sketch.

2. a coordinate system.

3. symbols.

4. a table of values.

5. all of the above.

The pictorial representation of a physics problem consists of

1. a sketch.

2. a coordinate system.

3. symbols.

4. a table of values.

5. all of the above.

Vectors

A vector is defined as a mathematical quantity with magnitude and direction.

• displacement
• temperature
• velocity
• pressure
• acceleration

A scalar is a mathematical quantity that has magnitude only

Vectors

Vectors

Vector Properties

Vectors

Displacement

Class Question

A particle moves from position 1 to position 2 during the interval ∆t. Which vector shows the particle’s average velocity?

(1) (2) (3) (4) (5)

Class Question

A particle moves from position 1 to position 2 during the interval ∆t. Which vector shows the particle’s average velocity?

(1) (2) (3) (4) (5)

Class Question

A particle undergoes acceleration while moving from point 1 to point 2. Which of the choices shows the velocity vector as the object moves away from point 2?

(1)

(3)

(2)

(4)

Class Question

A particle undergoes acceleration while moving from point 1 to point 2. Which of the choices shows the velocity vector as the object moves away from point 2?

(1)

(3)

(4)

(2)

Class Question

An acceleration vector

1. tells you how fast an object is going.

2. is constructed from two velocity vectors.

3. is the second derivative of the position.

4. is parallel or opposite to the direction of motion.

5. Acceleration vectors weren’t discussed in this chapter.

Class Question

An acceleration vector

1. tells you how fast an object is going.

2. is constructed from two velocity vectors.

3. is the second derivative of the position.

4. is parallel or opposite to the direction of motion.

5. Acceleration vectors weren’t discussed in this chapter.