science

• Newton's 2nd Law of Motion

  The acceleration of an object produced by a net force is directly proportional to the magnitude of the net force in the same direction as the net force, and inversely proportional to the mass of the object
• Acceleration


  Rate of change in velocity with time. It is a vector quantity having both magnitude and direction
• Uniformly Accelerated Motion (UAM)


  • The value of 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
  • An object in uniformly accelerated motion has non-zero but constant acceleration
• Projectile


  An object undergoing projectile motion
• Trajectory


  The arc or curve like motion path undergone by a projectile
• Angle


  A numerical value in degrees expressing the orientation of the projectile to be thrown or projected
• Projectile motion consists of horizontal and vertical motion working independently
• Types of Projectiles


  • Horizontal Launch Projectile
  • Angle Launch Projectile
• Horizontal Motion (x-component)


  • Neglect air resistance
  • There is constant horizontal velocity
  • Horizontal Acceleration is 0. ax=0
  • We can call horizontal distance as range (dx)
• Vertical Motion (y-component)


  • The force acting upon in this motion is the force of gravity
  • Vertical velocity is not constant (Vy)
  • We call the vertical distance as the height
• Height


  The vertical distance from the projectile to Earth's surface
• Range


  Horizontal distance covered by projectile
• Vx


  Horizontal velocity responsible for the projectile to travel horizontal distance
• Vy


  Vertical velocity responsible for the projectile to travel vertical distance
• Momentum


  The product of mass and velocity
• Momentum can be defined as "mass in motion"
• Impulse


  The change of momentum (∆ρ) is referred to impulse (I), which is known as the force multiplied by the time of contact
• The application of force over a certain period of time changes the momentum of the body
• The word momentum (plural, momenta) is Latin and means “movement” or “inertia in motion"
• two variables:

  • · how much stuff is moving
  • · how fast the stuff is moving.