Ch 5 Review 11/19/13

Question 0

Has magnitude but no direction

Answer 0

Scalar

Question 1

Has both magnitude and direction

Answer 1

Vector

Question 2

Is the size or amount of something and includes a unit of measurement

Answer 2

Magnitude

Question 3

Every vector can be represented as the sum of its _____

Answer 3

Components

Question 4

A _____ shows all of the forces acting on an object

Answer 4

Free-body diagram

Question 5

If a book sits on table, the table exerts an upward _______ on the book

Answer 5

Normal force

Question 6

The sum of two vectors is called the _____

Answer 6

Resultant

Question 7

_______ is the relationship between a spring’s change in length and the force it exerts

Answer 7

Hooke’s law

Question 8

When the net force acting on an object is zero, the object is in ______.

Answer 8

Equilibrium

Question 9

Is the force that resists the motion of objects

Answer 9

Friction

Question 10

Type of friction between objects that are not moving is called

Answer 10

Static friction

Question 11

A fluid used to reduce friction is called a

Answer 11

Lubricant

Question 12

______ is the action that causes objects to rotate

Answer 12

Torque

Question 13

An object is in ________ if the net torque on it is zero

Answer 13

Rotational equilibrium

Question 14

The longer the ______ of a force, the greater the torque

Answer 14

Lever arm