Reference Point
the reference point is the _______________ point used to describe an object's location
starting
A baseball player runs around all bases and returns to home plate. What is their displacement?
0 meters
When does an object have constant velocity?
When both speed and direction remain constant
What is the measure of how far an object has traveled?
distance
What does a steeper slope on a distance-time graph indicate?
a faster speed
A complete description of position must include:
Distance, direction, and a reference point
what is the measure of distance traveled per unit of time?
speed
On a distance-time graph, what does a straight line represent?
constant speed
If east is designated as the positive reference direction, how would you describe a position 30 meters west of the reference point?
-30 meters
How is average speed calculated?
distance divided by time
If you walk 1 kilometer to the library in 15 minutes (0.25 hours), what is your average speed in kilometers per hour?
4 km/hr
A soccer player's position can be described differently depending on:
a. the weather
b. their speed
c. the chosen reference point
d. their motion
c. the chosen reference point
_________ is the speed and direction of motion
velocity
_______ is the process of changing position
motion
What is the difference between distance and displacement?
Distance is the length of the path traveled, while displacement is the difference between initial and final positions
A ________ is a A quantity with both magnitude and direction
vector
When are distance and displacement equal?
When motion occurs in one direction only