Undefined function or variable 'impact'.

Question

Raad Alsulaiti 2020-4-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/515464-undefined-function-or-variable-impact

回答： Sriram Tadavarty 2020-4-5

Hey, Ive been stuck in this script for weeks. dont know what's wrong is it the varible "impact".

because it works for my friend but it dont work with me

function [thetadotdot] = acceleration(r,g,a_c,theta,k0)
thetadotdot = ((g.*r.*sin(theta))+(a_c.*r.*cos(theta)))./k0^2;
end

clc;
clear;
g = 9.81;
theta = 33;
vel = zeros(1,10);
tim = zeros(1,10);
AC = zeros(1,10);
i = 0;
for a_c = 1*g:g:10*g
    i = i + 1;
    AC(i)=a_c;
    I = impact(a_c,theta);
    vel(i) = I;
    tim(i) = 0.75/I;
end
figure
subplot(1,2,1)
plot(AC,vel)
title('Velocity vs acc.');
xlabel('acc');
ylabel('Velocity');
subplot(1,2,2);
plot(AC,tim)
title('Time vs acc.');
xlabel('acc');
ylabel('Time');