Motion Flashcard 1

Front

Wind pushes a toy sailboat across a pond. The boat moves in a straight path. What is changing?

Back

the boat’s position

Front

Reference point to describe change in position of a runner in a race.

Back

the starting line

Front

When an object’s distance from another object is changing,

Back

it is in motion.

Front

Reference point can also be described as what?

Back

A starting point

Front

Distance and direction of an object's change in position from a starting point

Back

displacement

Front

David walks 3 km north, and then turns east and walks 4 km. What is the distance?

Back

7 km

Front

Vector is a quantity with:

Back

magnitude and direction

Front

A car travels 90 meters due north in 15 seconds. Then the car turns around and travels 40 meters due south. What is the magnitude and direction of the car's resultant displacement?

Back

50 metres, North

Front

What is needed to determine an object's location?

Back

reference point

Front

To determine if an object has changed position, you need to know its position relative to another object.

Back

True