Definition of Environmental Health. Environmental health is the science and practice of preventing human injury and illness and promoting well-being by identifying and evaluating environmental sources and hazardous agents and
It turns out that an objectâs kinetic energy increases as the square of its speed. A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph.Thus a modest increase in speed can cause a large increase in kinetic energy.These ideas are combined in the equation for kinetic energy. In words: Kinetic energy equals the mass of the moving object times the square of that objectâs speed (v 2).hus a modest increase in speed can cause a large increase in kinetic energy. These ideas are combined in the equation for kinetic energy. In words: Kinetic energy equals the mass of the moving object times the square of that objectâs speed (v 2).
How do you increase the amount of kinetic energy? The kinetic energy, Ek, of a body of mass, m, travelling at a speed, v, is given by; Ek = 1/2 mv2 Ek can be increased by either increasing the mass of the object (but the a â¦ dditional mass must also travel at speed, v), or by increasing its speed.It is normally more practical to increase the speed of the object.he non-relativistic equation for kinetic energy is mv^2/2 where mass is m and velocity is v. The relativistic kinetic energy equation is m/(1-(v^2/c^2))-m where m is mass, â¦ v is velocity and c is the speed of light. The two variables which determine the kinetic energy of an object are mass and velocity.