A car is moving at constant velocity on a level road. The driver now heads up a ramp to a bridge. If the frictional force remains the same and the car continues at the same constant velocity, is the engine producing more forward force than before, less than before, or the same amount? Use force diagrams to explain your answer.

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).