Uniform accelerated motion

• Newton's Laws of Motion

  • Law of Inertia
  • Law of Acceleration
  • Law of Action and Reaction
• Distance


  Length of space between two points
• Velocity


  How fast an object moves in a direction
• Acceleration


  Rate of change of velocity with respect to time
• Uniform Accelerated Motion (U.A.M.)


  Motion in which the velocity of an object changes by an equal amount in every equal time period
• Uniform Accelerated Motion


  • The value of the acceleration is constant, it does not change
  • The velocity changes but at a constant rate
  • An object with zero acceleration is said to be in uniform motion
• Types of Uniform Accelerated Motion

  • One Dimension UAM
  • Two Dimension UAM
• One Dimension UAM - Horizontal dimension


  Happens in x-axis
• One Dimension UAM - Vertical dimension


  • Happens in y-axis (Free Fall Motion)
  • Motion that happens under the influence of gravity
• Free Fall Motion


  • Objects in free fall also exhibited uniformly accelerated motion
  • The acceleration due to gravity is 9.8 m/s²
  • It is constant acceleration for all falling bodies, regardless of their mass and weight
• Earth's Gravity is 9.8 m/s²
• Moon's Gravity is 1.62 m/s²
• Two Dimension UAM (Projectile Motion)


  • Combination of both Horizontal UAM and Vertical UAM
  • Motions happen when an object is launched into the air, and only acceleration due to gravity affects it
• Kinematics


  This leads to the study of motion using equations
• Uniform Accelerated Motion "Formula 1"

  Vf = Vi + at
• Uniform Accelerated Motion "Formula 2"

  d = Vit + at2 / 2
• Uniform Accelerated Motion "Formula 3"

  d = ( Vf - Vi / 2)t
• Uniform Accelerated Motion "Formula 4"


  Vf2 = Vi2 + 2ad
• A cyclist accelerates from a velocity of 2 m/s up to 8 m/s in 4 seconds. What is the cyclist’s acceleration?

  Equation use: Vf = Vi + at

  Answer: a = 1.5 m/s²
• a = acceleration expressed in meter per second squared (m/s2 )
• t = time expressed in second (s)
• Vf = final velocity expressed in meter per second (m/s )
• Vi = initial velocity expressed in meter per second (m/s)
• Gravity - force that acting on the vertical dimension