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).
Full Answer. As the height of the ramp increases, the height of the object placed at the top of this ramp does too. An increase in height of an object from a surface in the presence of a gravitational field corresponds to an increase in the potential energy of the object. When the object is left to roll or skid down the higher, more inclined ramp to the surface, this higher potential energy can be converted into correspondingly higher kinetic energy. Because kinetic energy is calculated from the mass of an object and its speed, the higher the ramp, the faster an object rolling or skidding down the ramp will be, assuming the mass of the object remains the same.