True or false: acceleration is the rate of change of displacement of an object

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

If forces acting on an object are unbalanced. true or false

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).