Projectiles (Leaving Cert Physics): Flashcards

Curved path (parabolic) under gravity alone

Horizontal & vertical motions are completely independent

Remains constant (no horizontal forces)

$9.8 \text{ m s}^{-2}$ downward

$u_x = u \cos θ$

$u_y = u \sin θ$

Zero (horizontal velocity stays constant)

$0$ (no horizontal forces)

$-9.8 \text{ m s}^{-2}$ (negative means downward)

$t = \frac{2u_y}{g}$

$h_{max} = \frac{u_y^2}{2g}$

$s_x = u_x t$

$R = u_x \times \frac{2u_y}{g}$

$v = \sqrt{v_x^2 + v_y^2}$

Parabolic