Mass and weight are closely related because mass affects the weight of an object experiencing the effects of gravity. Weight is the measure of the force of gravity on an object's mass, while mass is the measure of how mu... More »

Doctors use BMI to determine whether a child is at an appropriate weight for that individual's height, states Kids Health. BMI, which stands for body mass index, estimates how much body fat a person has based on height a... More » Health Medical Ranges & Levels

Gravity is a type of force that attracts objects to one another. Objects with more mass have more of a gravitational pull than those with less mass. The pull of gravity also depends on the distance between two objects. T... More » Science Physics Motion & Mechanics

Weight is a measurement of the force placed on an object by gravity, whereas mass is the amount of matter an object contains. Mass is commonly denoted using m or M, and weight is denoted with W. More »

Work has been done whenever there is a difference between the final kinetic energy of an object and the initial kinetic energy. Kinetic energy is the energy that an object has when moving at a certain speed. Work is a re... More »

An object's acceleration is constant and downward due to the force of gravity In projectile motion, but the object's velocity reverses direction during the object's motion. This is because of the inertia described in New... More »

The equation for determining the net force acting on an object is F = ma, or force equals mass times acceleration. Net force is measured in terms of acceleration, which means a change in velocity. If there is no change i... More » Science Physics