AP Physics 2D Kinematics

X and Y are independent, meaning you can use 1 to solve for the other

During projectile motion, which is when the only vertical acceleration acting on an object is gravity, meaning objects will always land at the same time, regardless of its horizontal velocity

Mass does not affect kinematics (not in any equations)

Equations used for X - d = vt (Y you can use all 3)

Time is the only thing that is the same for both the X and Y components

Velocity at the top is not 0, it is whatever the X is (vcos0), but the Y (vsin0) is 0

Range is the horizontal distance, the Max range is when the launch angle is 45 (the optimal angle)

Complimentary angles give the same range ex 30-60 10-80 15-75

If displacement is greater time is greater, they will not be the same unless displacement is the same (d is in the kinematic equations, and it is proportional to t)

when a projectile is launched at an angle, the x component will always decrease