Understanding Object Behavior and Vector Concepts: Interactions & Newton's Laws, Slides of Engineering Physics

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1.2 Interactions - where’s the evidence

• Change of velocity
• Change of identity
• Change of shape
• Change of temperature
• Lack of change when change is expected

Clicker Quiz

Moving objects left the traces shown at left. The dots were laid down at equal time intervals. Which object(s) did NOT interact with another object somewhere?

1) A

2) B

3) C

4) D

5. A and B

A C

D

B

1.4 Newton’s First Law of Motion

An object moves in a straight line and at

constant speed except to the extent that it

interacts with other objects.

How many of the following quantities are vectors?

1. A change in stock price.
2. A transfer of money from one account to another.
3. The position of the corner of a rectangle with respect to you.
4. The length of a side of that rectangle. A. 1 B. 2 C. 3 D. 4 E. 5

Clicker Quiz

1.5 Vectors