Question

An ant carries a morsel of food 4.26 meters along a straight path to his nest. He then turns around and follows the path back to the source of the food. What is his displacement when he arrives back at the food source?

0.00 meters

2.13 meters

4.26 meters

8.52 meters

Answer 1

0.00 meters as he went straight from the food source to his nest and back. It'd be different if he took a turn somewhere and took a longer/shorter route. 

Answer 2

his displacement is 8.52 meters