A concentrated mass m accompanied by a point force P:

For a body of mass m the relation between the momentum and velocity four-vectors is as in the classical case.

The kinetic energy lost by a body of mass m rising through the same distance is remarkably similar:.

Since the energy E of the ball decreases, its mass m must also decrease.

The methods used to determine the molar mass M are either relative or absolute.

This depends on the mass m of the particle.

That is how much kinetic energy the object of mass m needs in order to escape.

The mass m, introduced above, is the reduced mass of the system.

That tells you what a is (since you know the mass m).

Case 2: amount of solute mass m is given.