Question

Can someone help me?!!!!!

Answer 1

Answer:

Parabola

Explanation:

The motion of a projectile consists of two independent motions:

- A uniform motion along the horizontal (x) direction, with constant velocity $v_x$. In fact, there are no forces acting along this direction (if we neglect air resistance), so the acceleration is zero and the velocity is constant

- An uniformly accelerated motion along the vertical (y) direction, with constant acceleration $g=9.8 m/s^2$ downward (acceleration due to gravity). This acceleration is due to the force of gravity that pulls the projectile downward.

The composition of these two motions gives a parabolic trajectory. In fact, the equations of the motion along the two directions are:

$x(t) = v_x t$ (1)

$y(t) = h + v_y t - \frac{1}{2}gt^2$ (2)

Solving for t in eq.(1),

$t=\frac{x}{v_x}$

and substituting into (2)

$y(t) = h + \frac{v_y}{v_x}x - \frac{1}{2}g(\frac{x}{v_x})^2$

which is the equation of a parabola.