Write a captain for a, b and c

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Could someone me find the answer to this problem.