Position and Motion
The starting position you chose to describe the location, or position, of an object
What is a reference point?
The measure of distance an object travels per unit of time
What is speed?
The change in velocity during a period of time
What is acceleration?
This is the distance and displacement of a person who walked 2 blocks north, 2 blocks east, and 2 blocks south
(Hint: Draw a picture to help you)
What is 6 blocks and 2 blocks east?
The process of changing position
What is motion?
The same distance is traveled each second
Constant speed
A graph that tells you how far away an object is from the reference point over time
What is a distance vs. time graph?
The speed of a dog that ran 100 meters in 20 seconds
What is 5 m/s?
A complete description of this includes a distance, a direction, and a reference point
What is position?
The speed and direction of a moving object
What is velocity?
Three ways an object can accelerate
What is by speeding up, by slowing down, and by change direction?
The time it took an airplane going 500 miles/hour to travel 10,500 miles
What is 21 hours?
The difference between the starting position and the final position of an object
What is displacement?
A car's speedometer measures this
What is instantaneous speed?
A graph that tells you how fast an object was moving over time
What is a speed vs. time graph?
This is a car's acceleration when it travels on a straight road and it decreases its speed from 75 m/s to 63 m/s in 4.0 seconds
What is -3.0 m/s2?
A student walks to school 2 km in the morning and back home 2km in the afternoon. At the end of the day this is her distance and this is her displacement.
What is 4 km and 0 km?
The equation for average speed
What is... v = d/t
or Speed = total distance/total time?
The acceleration equation
What is a = (vf - vi)/t ?
This is the acceleration of Isabella when: after she was riding her bike for 3 seconds she was going 1.2 m/s, then at 7 seconds she was going 2.0 m/s
What is 0.2 m/s2?