PLZ HURRY HELP The total mass of a person and a bicycle is 120 kg. At a certain moment, the forward force due to pedaling is 120 N and the backward drag of the air resistance is 40 N. The acceleration of the cyclist at this moment is closest to m/s^2.

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).