Presentation on theme: "Motion in 2 Dimensions Projectile Motion"— Presentation transcript:
1Motion in 2 Dimensions Projectile Motion Projectile, any object launched through the air.Trajectory, the path a projectile takes as it travels through space.The path the trajectory takes depends on the view.The distance it travels is called its range.
2Fun, right.The trajectory of any object launched into the air can be broken up into two components, if we ignore air resistance. Vertical = gravitational forceHorizontal = applied forceHorizontal remains constant while the vertical will either increase or decrease depending on the direction.
3The time an object in free fall takes to hit the ground can be determined by taking the square root of 2d/gThe distance fallen d = 1/2at2These two equations are derived from the distance with average acceleration equation. The maximum height of a projectile is this same equation with diff variables.(Memorize them)
4Aw, you’re tire is all flat and junk. Remember, gravity works on all objects equally.Which ball would hit first: One dropped from a height of 2 meters or another thrown horizontally with a velocity of 20m/s at a height of 2 meters?
5The horizontal and vertical components can be calculated by the following: Vx= Vo CosVy = VoSinAt any given point in time is represented by:X = VxT = VoCosTY = VyT = VoSinT – 1/2gt2
6Range can be found with the equation R = VxT= 2VxVy/gLets try a couple.
7Velocity is speed with direction Acceleration is a change in speed or directionUniform circular motion is the movement of an object at a constant speed around a circle with a fixed radiusThis object would travel at a constant velocity but not at a constant acceleration
8Objects traveling in a circle accelerate towards the center, centripetal acceleration Ac = V2/r or Ac= 4pi2r/T2The force that causes centripetal acceleration is represented by F = macThe time it takes an object to travel around a circle is called the period
9Last but not least,Motion aka velocity is relative to a frame of reference.Relative velocity is represented by the following: va/b + Vb/c = Va/cTo simplify Va/b and Vb/c are similar to x and y components or (a) and (b) in the pythagorean theorem