Q. Suppose that a large cargo truck needs to cross a bridge. The truck is 30 m long and 3.2 m wide. The cargo exerts a force of 54,000 N. The bridge can only withstand 450 Pa of pressure. Is it safe for the truck to cross the bridge?
Q. A movie stuntwoman drops from a helicopter that is 29.0 above the ground and is moving with a constant velocity whose components are 8.00 upward and 18.0 horizontal and toward the south. You can ignore air resistance.Where on the ground (relative to the position of the helicopter when she drops) should the stuntwoman have placed the foam mats that break her fall?