SCIENCE QUARTER 4

• Projectile


  A body or any object that is moving under the influence of gravity
• Two Motion


  1. Horizontal motion

  2. Vertical motion

  3. Curved path when combined
• Projectile


  A body or any object that is moving under the influence of gravity
• Projectile


  • Moves under the influence of gravity
• Motion of a projectile

  1. Horizontal motion

  2. Vertical motion

  3. Curved path when the two motions are combined
• Distance


  The length of the entire path that an object travelled
• Displacement


  The shortest distance between the object's initial and final position
• Speed


  The rate of distance covered at a given time
• Velocity


  Speed with direction
• Scalar quantity


  Has no direction but has magnitude (e.g. speed, time, distance, temperature)
• Vector quantity


  Has both direction and magnitude (e.g. velocity, displacement, acceleration, momentum, impulse)
• Distance


  The length of the entire path that an object travelled
• Displacement


  The shortest distance between the object's initial and final position
• Speed


  The rate of distance covered at a given time
• Velocity


  Speed with direction
• Scalar Quantity


  Has no direction but has magnitude (e.g. speed, time, distance, temperature)
• Vector Quantity


  Has both direction and magnitude (e.g. velocity, displacement, acceleration, momentum, impulse)
• Average Speed


  Total distance travelled divided by the total time travelled
• Average Velocity


  Total displacement divided by the total time with direction
• Instantaneous Speed


  Speed at a specific point in time with no direction
• Instantaneous Velocity


  Speed at a specific point in time with direction
• Constant motion


  Motion when the distance travelled by an object is the same for each second
• Acceleration

  • There is a constant change in velocity or speed in a given unit of time
  • Acceleration increases by 9.8 m/s² due to the force of gravity
• Uniformly accelerated Motion (Horizontal Motion)


  • An object dropped from a height experiences acceleration of 9.8 m/s²
• Projectile Motion


  Motion where an object given an initial velocity is thrown or projected and is allowed to be acted on by gravity in a curved-like path
• Trajectory


  Curved path followed by a projectile
• Parabola


  The shape of the curved path
• Stroboscope


  Instrument for studying periodic motion or determining speed of rotation by shining a momentary bright light at intervals so that a moving object appears stationary
• Horizontally Launched Projectile


  • Projectiles that are landed with an initial velocity from an elevated position and follow a curved-like path to the ground
• Angle-Launched Projectile


  • Projectiles landed at an angle with respect to the horizontal and rise to a peak while moving horizontally, then fall with the path upward to the peak being symmetrical
• Launch angle / Angle of Release


  Angle of a projectile's initial velocity when measured from horizontal direction
• Range


  Horizontal displacement of a projectile
• Height


  Vertical distance of the projectile above the ground
• Mass


  Quantity of a substance
• Momentum


  Mass in motion
• Momentum


  Equal to the product of mass and velocity
• P


  Momentum in kilogram.meter per second (kg·m/s)
• m


  Mass of the moving object in kilogram (kg)
• v


  Velocity of moving object in meter per second (m/s)
• Change in velocity of an object

  Change in Momentum