PRELIMS- LAB REVIEWER

• The magnitude of any physical quantity must include 


  Both the number and unit
• The standard unit of length

  Meters (m)
• The standard unit of mass

  Kilogram (kg)
• The standard unit of time

  Seconds (s)
• The standard unit of substance

  Mole (mol)
• The standard unit of electric current

  Ampere (A)
• The standard unit of luminous intensity

  Candela (cd)
• The fundamental unit of temperature

  Kelvin (K)
• Area unit

  m^2
• volume unit

  m^3
• US customary system standard unit for length

  Feet (ft)
• US customary system standard unit for mass

  Pounds (lbs)
• US customary system standard unit for time


  Seconds (s)
• As the release height of the car increases, the speed of the car

  Decreases
• As the release height of the car increases, the skid distance of the car (and box)

  Decreases
• The change in position of an object

  Displacement
• In displacement, what direction is negative

  south, west, southwest
• In displacement, what direction is positive

  North, east, northeast
• Displacement and velocity may be positive or negative.


  True
• A negative displacement would mean that an object is traveling towards the

  West or south
• A negative velocity would mean that an object is

  slowing down
• refers to "how fast an object is moving." can be thought of as the rate at which an object covers distance.

  Speed
• is the speed at any given instant in time.

  Instantaneous speed
• the average of all instantaneous speeds; found simply by a distance/time ratio.

  Average speed
• is the rate at which the position changes.

  Velocity
• is defined as the rate at which an object changes its velocity.

  Acceleration
• Speed is a ___ quantity

  scalar
• Velocity is a ___ quantity

  Vector
• Acceleration is a ___ quantity

  Vector
• Distance is a ___ quantity

  Scalar
• Displacement is a ___ quantity

  Vector
• A physical quantity that can be specified

  scalar
• Time, mass, distance, length, volume, temperature, and energy are examples of

  Scalar quantities
• Physical quantities specified completely by giving a number of units (magnitude) and a direction are called

  vector
• displacement, velocity, position, force, and torque Are examples of

  Vector quantities
• vector can be denoted as a letter in bold type with an arrow above it (A), a bold letter (A), or a hut above it (a). 

  true
• The vector sum of two (or more) vectors is called the

  Resultant vector
• the time to complete one oscillation remains constant


  Period (T)
• is defined to be the number of events per unit time.

  Frequency (f)
• one complete oscillation

  Cycle