Please amend my code :(

I want V when x=5000 but something wrong...

please amend my code

clear all

close all

grav=9.81;

theta=pi/4;

v=20;

x=0; vx=cos(theta).*v;

y=0; vy=sin(theta).*v;

dt=0.05;

for n=1:100

x=x+vx*dt;

vx=vx+vx.*dt;

y=y+vy*dt

vy=vy-grav*dt;

if(y<0); break; end

n=1:10000

if(x==5000);break; end

else(x<5000);

v=v+1;

end

v

Answer 1

[Girijashankar Sahoo]

%% if statement end after else, #look the code again

grav=9.81;

theta=pi/4;

v=20;

x=0; vx=cos(theta).*v;

y=0; vy=sin(theta).*v;

dt=0.05;

for n=1:100

x=x+vx*dt;

vx=vx+vx.*dt;

y=y+vy*dt

vy=vy-grav*dt;

if(y<0); break; end

n=1:10000

if(x==5000);break;

else(x<5000);

v=v+1;

end

end

v