Name two sensors from Table $3\mathrm{.}1$ in the discussion to Activity $3\mathrm{.}4$ that might be used in a sensor$-$enabled shopping trolley to track its movement. You answer should name the force that the sensor detects, what electronic quantity it is converted to$,$ and what it measures. Continue to describe how the sensors might work together to determine the speed and path of the trolley through a retail unit.