Chapter 1

Question 1

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

Answer 1

Motion

Question 2

The distance traveled divided by the time interval during which the motion occurred

Answer 2

Speed

Question 3

The speed of an object in a particular direction

Answer 3

Velocity

Question 4

The rate at which velocity changes over time; an object accelerates if its speed, direction, or both change

Answer 4

Accelerates

Question 5

A push or a pull exerted on an object in order to change the motion of the object; force has size and direction

Answer 5

Force

Question 6

The SI unit for force (symbol, N)

Answer 6

Newton

Question 7

The combination of all of the forces acting on an object

Answer 7

Net Force

Question 8

A force that opposes motion between two surfaces that are in contact

Answer 8

Friction

Question 9

A force of attraction between objects that is due to their masses

Answer 9

Gravity

Question 10

A measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe

Answer 10

Weight

Question 11

A measure of the amount of matter in an object

Answer 11

Mass