A reference point is...
What is a starting point used to describe the location or the position of an object.
A car travels 120 meters east in 10 seconds. What is the car's velocity?
12 m/s east
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.
the speed of an object moving in a specific direction
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.
What is average speed?
the total distance an object travels divided by the total time it takes to cover that distance
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.