Based on the image which parachuter will fall fastest
A
B
Or C

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Can anybody me with this? ? (picture included.)

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).