A reference point is...
What is a starting point used to describe the location or the position of an object.
Does velocity use distance or displacement?
What is displacement.
An object's distance and direction from a reference point.
What is position?
A car travels a total displacement of 50 km North in 2 hours. What is the velocity of the car?
25km/h N
A person walks 515m East then turns around and walks 175m West. What is the displacement?
340m E.
What is velocity?
A car travels West for 100km, then turns around and travels 250km East. The total time it took this car to travel is 4.5 hours. What is the average velocity of the car?
33.33km/h E.
the straight-line distance, or the difference, between the initial position and the final position of an object.
A plane is travelling 1275 km North, then travels 785 km South. The total time this plane took was 5.5 hours. What is the average velocity of the plane?
89.1 km/h N.