Motion

Question 0

SI

Answer 0

A system of measurement based on multiples of ten and on established measures of mass, length, and time.

Question 1

Reference point

Answer 1

A place or object used for comparison to determine if an object is in motion.

Question 2

Distance

Answer 2

The length of the path between two points.

Question 3

Motion

Answer 3

The state in which one object’s distance from another is changing.

Question 4

Speed

Answer 4

The distance an object travels per unit of time.

Question 5

Average speed

Answer 5

The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time.

Question 6

Instantaneous speed

Answer 6

The speed of an object at one instant of time.

Question 7

Velocity

Answer 7

Speed in a given direction.

Question 8

Slope

Answer 8

The steepness of a graph line; the ratio of the vertical change (the rise) to the horizontal change (the run).

Question 9

Acceleration

Answer 9

The rate at which velocity changes.