Answer:
The speed of the mouse relative to the factory floor is 5 m/s.
Step-by-step explanation:
Given that,
A factory conveyor belt rolls at 3 m/s,
![v_1=3\ m/s](https://img.qammunity.org/2021/formulas/physics/high-school/pszhmjlz66hj2hloka76dryqkywnwz12zl.png)
A mouse sees a piece of cheese directly across the belt and heads straight for the cheese at 4 m/s,
![v_2=4\ m/s](https://img.qammunity.org/2021/formulas/physics/high-school/gde70ddsn9h59lz2xadxixaqs281ou4mij.png)
To find,
The mouse's speed relative to the factory floor.
Solution,
The resultant velocity of the mouse is given by the resultant of two velocities. It is given by :
![v=√(v_1^2+v_2^2)](https://img.qammunity.org/2021/formulas/physics/high-school/xglxfcjeugbedjijhcokd7omfp84713n8w.png)
![v=√(3^2+4^2)](https://img.qammunity.org/2021/formulas/physics/high-school/sy3o1z92wa8ugexw77rsqzoluzh9qn58mo.png)
v = 5 m/s
So, the speed of the mouse relative to the factory floor is 5 m/s.