Motion Unit

Question 1

Distance

Answer 1

How far an object moves.

Question 2

Displacement

Answer 2

The distance and direction of an objects starting point

Question 3

Speed

Answer 3

The distance an object travels per unit of time

Question 4

Average Speed

Answer 4

Total distance traveled by the total time of travel

Question 5

Instantaneous Speed

Answer 5

The speed at a given point in time

Question 6

Velocity

Answer 6

Includes the speed of an object and the direction of its motion.

Question 7

Force

Answer 7

A push or pull

Question 7

Acceleration

Answer 7

The rate of change of velocity

Question 8

Net Force

Answer 8

zero because the forces cancel each other out.

Question 9

Balanced Forces

Answer 9

Forces on an object that are equal in size

Question 9

Inertia

Answer 9

AN objects resistance to motion

Question 10

Newton’s Second Law of Motion

Answer 10

The acceleration of an object in the same direction as the net force on the object.

Question 11

Friction

Answer 11

The force that opposes the sliding motion of two surfaces touching each other.

Question 12

Static Friction

Answer 12

The frictional force that prevents two surfaces from sliding past each other

Question 13

Sliding Friction

Answer 13

The force that opposes the motion of two surfaces sliding past each other.

Question 14

Air Resistance

Answer 14

opposes the motion of objects that move through the air.

Question 15

Gravity

Answer 15

An attractive force between any two objects that depends on the masses of the objects and the distance between them.

Question 16

Centripetal acceleration

Answer 16

Acceleration towards the center of a curved or circular path

Question 16

Centripetal force

Answer 16

The net force exerted toward the center of a curved path.

Question 17

Weight

Answer 17

The gravitational force exerted on an object

Question 18

Newton’s Third Law of Motion

Answer 18

describes action-reaction pairs this way

Question 19

Momentum