Suggested Answer
The grilling device is 1.1 metres long.The hamburger is cooked in 2.6 minutes, or 156 seconds.Therefore, the machine's speed should be such that it requires cooking till it passes the machine.The machine's total length traversed in one minute is currently provided byv = d/tv = 1.1/2.6minsv = 0.00423m/sConsequently, the belt should move at a speed of 0.00423m/s