# Projectile motion of a cannonball(without drag) - calculating the route, range, height and time it will spend in the air of a cannonball fired with a certain force

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TOLGAHAN VARISLI on 8 May 2021
A force of 1000 newtons is applied to the cannonball. But the code does not simulate correctly. I could not find my fault. I would be very grateful if you could help. Thanks.
clear;
clc;
g=9.81;
m=1;
F=1000;
dt=0.1;
t=0;
angle=45;
Fx=cosd(angle)*F;
Fy=sind(angle)*F;
axold=Fx/m;
ayold=Fy/m;
vx=0;
vy=0;
x=0;
y=0;
while min(y)>-0.001
t=t+dt;
ax=0;
ay=-g;
if (t==0.1)
vx=vx+dt*(axold)/2;
else
vx=vx+dt*(ax)/2;
end
if (t==0.1)
vy=vy+dt*(ayold)/2;
else
vy=vy+dt*(ay+ayold)/2;
end
if (t==0.1)
x=x+vx*dt+dt*dt*(axold)/2;
else
x=x+vx*dt+dt*dt*(ax+axold)/2;
end
if (t==0.1)
y=y+vy*dt+dt*dt*(ayold)/2;
else
y=y+vy*dt+dt*dt*(ay+ayold)/2;
end
Height=max(y);
end
plot(x,y)
xlabel('x distance (m)')
ylabel('y distance (m)')
title('Cannonball Path')
Image Analyst on 9 May 2021
@TOLGAHAN VARISLI, deleting questions after they've been answered is very much frowned upon and may limit the number of answers you get in future questions.

Image Analyst on 8 May 2021
See my attached projectile demo. It has variables for just about everything you could want to specify and computes just about everything you can possibly think of.
TOLGAHAN VARISLI on 9 May 2021
Ok. Thanks

R2020b

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