an object is launched with an initial velocity of 50.0 m/s at a launch angle of 36.9 degress above the horizontal. make a table showing vaules of x, y, vx,vy and the speed of v every 1 s from t = 0s to t = 6s

Respuesta :

As we know that initial speed of projection is given as

[tex]v_i = 50 m/s[/tex]

angle of projection is given as

[tex]\theta = 36.9 degree[/tex]

now we have

[tex]v_{ix} = 50 cos36.9 = 40 m/s[/tex]

[tex]v_{iy} = 50 sin36.9 = 30 m/s[/tex]

now we will have

[tex]a_x = 0 m/s^2[/tex]

[tex]a_y = -10.0 m/s^2[/tex]

so here at all time instant speed in x direction remains the same

[tex]v_x = 40 m/s[/tex]

while in y direction we will have

[tex]v_y = v_{iy} + at[/tex]

[tex]v_y = 30 - 10 t[/tex]

now between t = 0 to t = 6 s we have

[tex]v_y = 30 m/s, v_y = 20 m/s, v_y = 10 m/s, v_y = 0 m/s, v_y = -10 m/s, v_y = -20 m/s, v_y = -30 m/s[/tex]

now we have

[tex]x = v_x t[/tex]

[tex]x = 40 t[/tex]

now between t = 0 to t = 6 s we have

[tex]x = 0, x = 40 m, x = 80 m, x = 120 m, x = 160 m, x = 200 m, x=240 m[/tex]

Now for y component we have

[tex]y = v_{iy} t + \frac{1}{2}at^2[/tex]

[tex]y = 30(t) - 5 t^2[/tex]

[tex]y = 0 m, y = 25 m, y = 40 m, y = 45 m, y = 40 m, y = 25 m, y = 0[/tex]