Rest for one observer can be motion for another.
1. What characterizes an object that is at rest?
2. A cyclist changes position relative to nearby trees while traveling along a road. What state is the cyclist in?
3. What does relative motion describe?
What is the state called when an object does not change position relative to surroundings?
Rest
What is the state called when an object changes position relative to surroundings?
Motion
What describes motion of an object relative to another object or observer?
Relative motion
How is a passenger in a moving train at rest relative to others?
They do not change position relative to other passengers
How is a passenger in a moving train in motion relative to a person outside?
They change position relative to the person standing outside
What defines translatory motion in an object?
Every point moves the same distance in a given time.
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