Two-Dimensional Motion

What is Projectile Motion?*Motion of a body projected near Earth's surface, describing a curved path in a vertical plane.

How does Projectile Motion involve horizontal and vertical directions?*Involves simultaneous motion in both horizontal and vertical directions, which are independent yet coordinated. Vertical motion is similar to free fall.

What is the Problem-Solving Technique for analyzing Projectile Motion? (General Analysis)*1) Resolve displacement, velocity, and acceleration into horizontal/vertical components. 2) Apply kinematic equations separately for each direction. 3) Determine resultant velocity by vector addition of components.

What is the Trajectory of a projectile? (Important Term)*The path described by a body, which for this chapter is parabolic.

What is the Range of a projectile? (Important Term)*The horizontal displacement between the point of projection and the point of impact.

What is the Angle of Projection? (Important Term)*The angle between the direction of projection and the horizontal plane through the point of projection.

What is the Time of Flight? (Important Term)*Time taken from the point of projection to the point of impact.

What is Horizontal Motion in Projectile Motion (without air resistance)?*Cannon ball moves in a straight line with constant velocity as horizontal acceleration is zero (ax = 0; ux = vx; sx = u_x t).

What is Vertical Motion in Projectile Motion?*Cannon ball slows moving upwards, stops momentarily at max height, then speeds up downwards. Acceleration is g downwards.

What are the Kinematics Equations for Vertical Motion (taking up as positive)?*ay = -g = -9.81 m s⁻², vy = uy + ay t, sy = uy t + ½ ay t², vy² = uy² + 2 ay s_y.

What is the shape of a projectile's path (without air resistance)?*A parabola.