Projectile

• Trajectory - path followed by projectiles as they move through space.
• Projectile - an object that is thrown or projected into the air
• Velocity - speed with direction, measured in meters per second (m/s).
• Velocity - speed with direction
• Gravity - force exerted on objects due to their mass
• Acceleration - rate at which velocity changes over time, measured in m/s2.
• Range - horizontal distance traveled by a projectile from its starting point to where it lands.
• Free fall - motion under gravity alone without any other forces acting upon it.
• Projectile motion is a form of motion where an object moves in a curved path
• Projectile


  The object that is thrown or projected and exhibits projectile motion
• Trajectory


  The curve-like path undertaken by a projectile
• Projectile motion consists of horizontal and vertical motion working independently
• Horizontal motion


  • No resistance in any form
  • Constant horizontal velocity (vx)
  • Horizontal acceleration is zero
• Range


  The horizontal distance (dx)
• Vertical motion


  • The force acting is the force of gravity (g or ay)
  • Constant acceleration due to gravity (-9.8 m/s^2)
  • Vertical velocity (vy) is not constant
  • Vertical distance (dy) is the height
• Solving a problem for a horizontally launched projectile

  1. Find the time (t)

  2. Use the time to find the height (dy)

  3. Use the height to find the final velocity (vf)
• The negative sign in the final velocity indicates the downward direction
• Instructor: 'Check out the part two of this lesson before we end'