Jumping on a trampoline is an excellent way to illustrate all three of Newton's Laws. Trampoline shows Newton's three laws as the following:
- The first law, which tell us that an object will continue moving unless acted upon by an outside force, is illustrated by the fact that you don't soar into the sky when you jump up and that you don't fly through the bottom of the trampoline when you come down. Gravity and the springs of the trampoline keep you bouncing.
- The second law illustrates how velocity changes with the equation F=ma, or force equals mass multiplied by acceleration. This simple equation is used to find the equations for kinetic energy, where acceleration is simply gravity. This means you (the mass) multiplied by the acceleration (gravity) equals the force upon the trampoline.
- The third law says that every action has an equal and opposite reaction. This is illustrated by Hooke's Law. When the springs are stretched they exhibit an equal and opposite force, compressing back into equilibrium and propelling you up in the air.
They can conserve energy and resources by regulating their activities, producing only those genes necessary for the cell to function.
Answer:
Correct Answer: Estimating the adequacy of an individual’s nutrient intake
Explanation:
Dietary Reference Intake is used to plan a diet for a regular <em>healthy individual</em> and not for a group of people or for people with medical problems. This is Dietary Reference introduced by the Institute of medicine of the national academies in the US. In order for it to be an average reference that can be widely used by people everywhere around the globe it has to take into account the nutrition recommendations for a single healthy individual, as this eliminates several unknown variables. People with medical problems or population groups cannot appropriately use this as a reference as they do not represent a dietary norm; however, individuals from these groups are free to use the DRI in order to properly plan their meals and nutritional intake.
Observations are used with observing, forming a hypothesis, and analyzing data.
Wave. ... (Science: physics) A vibration propagated from particle to particle through a body or elastic medium, as in the transmission of sound; an assemblage of vibrating molecules in all phases of a vibration, with no phase repeated; a wave of vibration; an undulation. See Undulation.