An object that is moving will stop moving when

a. it has used up all its momentum.
b. something pushes or pulls it to a stop.
c. it has stopped speeding up.
d. the force that is making it move stops pushing it.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

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).

What explosion in the upper solar atmosphere releases about as much energy as millions of 100-megaton hydrogen bombs exploding simultaneously?