Forces

Speed equals distance divided by

• time

• velocity

• size

• motion

Average speed is

• equivalent to velocity.

• the rate at which an object is moving at a given instant.

• the rate at which a slope changes.

• the total distance traveled by the total time.

What does the speed of an object tell you about that object's motion?

• How far the object travels to come to a stop

• How much time the object takes to move faster

• How far the object moves in a certain amount of time

• How much the object slows down in a certain amount of time

Tags

NGSS.MS-PS3-1

Speed in a given direction is called

• velocity

• distance

• average speed

• instantaneous speed

Which of these is an example of negative acceleration?

• 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

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

• moving at a constant speed

• increasing its speed

• decreasing its speed

• not moving at all

In physical science, a push or pull is called a(n)

• motion

• inertia

• acceleration

• force

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What is net force?

• A push or pull

• The amount of energy an object has

• A measure of how fast an object is moving

• The combination of all forces acting on an object

Tags

NGSS.MS-PS2-2

A change in an object's motion is caused by

• equal forces acting on that object

• unbalanced forces acting on that object

• balanced forces acting on that object

• none of the above

Tags

NGSS.MS-PS2-2

The force that one surface exerts on another when the two rub against each other is called

• friction

• acceleration

• inertia

• gravity