Some number inputs do not work with code while others do.

For some inputs, the code works properly. But for example, if the number I put in for mass is greater than or equal to the number for acceleration, then the code does not work. What is wrong with my code? It says that the matrix dimensions must agree, but I do not know what that means. I am fairly new at MATLAB, so any help would be very much appreciated. Thank you! (Below is a pic of my code)

Answer 1

[Guillaume]

You can see in your screenshot that both mass and acceleration are text not number. While you can indeed multiply two strings together in matlab, it doesn't make much sense (what is the product of 'abc' with 'def'?) and the strings much have the same number of characters.

In any case, you want numbers not text from input, so remove the 's' option from the two input calls.