Projectile Motion 9

• Uniform acceleration- it is a type of motion in which the velocity of an object changes by an equal amount in every time period
• In uniformuniformly acceleration, 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 unform motion.
• An object in uniformly accelerated motion has non-zero but constant acceleration
• Projectile- an object undergoing projectile motion
• Trajectory-the arc/curve like motion path undergone by a projectle
• The horizontal component of projectile motion has the acceleration equal to 0 since the velocity is constant
• Why the horizontal component has 0 acceleration? 


  The velocity is constant
• The vertical component of acceleration is constant since the acceleration is due to gravity
• Why the vertical component which is the acceleration is constant

  Because of gravity
• The formula of gravity is 9.8 m/s²
• The projectile motion is combination of horizontal and verticalvertical motion
• When an object reaches a maximum height what is the vertical velocity equal?

  0
• The amount of time the object reaches the maximum height is the same aamount of time needed to face the ground
• What angle has the maximum height?

  75
• Which angke the the longest range?

  45°
• What is the relationship of 30 and 60 and 15 and 45?

  Same