Chapter 10 - Motion

Question 1

Motion

Answer 1

An object’s change in position relative to a reference point.

Question 2

Reference Point

Answer 2

A stationary object.

Question 3

Displacement

Answer 3

The change in position of an object.

Question 4

Speed

Answer 4

How fast an object moves.

Question 5

Average Speed

Answer 5

The distance traveled by an object divided by the time the object takes to travel that distance.

Question 6

Instantaneous Speed

Answer 6

Speed measured in an infinitely small time interval.

Question 7

Velocity

Answer 7

The speed of an object in a particular direction.

Question 8

Resultant Velocity

Answer 8

The total velocity after combining two velocities.

Question 9

Acceleration

Answer 9

Any change in velocity.

Question 10

Centripetal Acceleration

Answer 10

An object traveling in a circular motion.

Question 11

Constant Acceleration

Answer 11

Moving in a circle.

Question 12

Force

Answer 12

Anything that changes the state of rest or motion of an object.

Question 13

Net Force

Answer 13

The combination of all forces acting on an object.

Question 14

Balanced Forces

Answer 14

Do not cause an object at rest to start moving.

Question 15

Unbalanced Forces

Answer 15

The net force is greater than zero causing the object to accelerate.

Question 16

Friction

Answer 16

The unbalanced force that acts against an object’s motion.

Question 17

Sliding Friction

Answer 17

When objects slide past each other.

Question 18

Rolling Friction

Answer 18

When a round object rolls over a flat surface.

Question 19

Fluid Friction

Answer 19

The friction between the air and the surface of a moving object.

Question 20

Static Friction

Answer 20

The friction between surfaces that are stationary.

Question 21

Kinetic Friction

Answer 21

The friction between moving surfaces.