Ch.1 Motion

Speed equals distance divided by

• time

• velocity

• size

• motion

Tags

NGSS.MS-PS3-1

When you know both the speed and direction of an object's motion, you know the

• average speed of the object

• instantaneous speed of the object

• distance the object has traveled

• velocity of the object

Tags

NGSS.MS-PS3-1

The steepness of a line on a graph is called the

• rise

• run

• slope

• vertical axis

The rate at which velocity changes is called

• instantaneous speed

• direction

• acceleration

• motion

Which of the following is the SI unit of acceleration?

• m/s

• m/s²

• m²/s

• s²/m

On a graph showing distance versus time, a horizontal line represents an object that is

• moving at a constant speed

• increasing its speed

• decreasing its speed

• not moving at all

The International System of Units is used by scientists

• only in the United States

• only in France

• in most of Europe

• all over the world

An object changing direction is an example of

• acceleration

• speed

• velocity

• constant rate

Which of these is an example of deceleration?

• a bird taking off for flight

• a roller coaster moving down a steep hill

• a car approaching a red light

• an airplane following a straight flight path

If you know a car traveled 300 kilometers in 3 hours, you can find its

• acceleration

• direction

• average speed

• velocity