HESI A2 Exam: Kinetic and Potential Energy
• What type of energy represents the stored energy of an object?
• The movement or motion energy of an object is _________
• What is the formula for finding kinetic energy?
• What does Bernoulli’s equation state?
The higher an object or person is above the ground, the more gravitational potential energy it has. Potential energy is the stored energy of an object. A loaded spring is an example of potential energy.
Kinetic energy is the movement or motion energy of an object. Mass and speed determine kinetic energy.
Electric energy is the energy created by electrons moving through an electrical conductor. Lightning and electricity are examples of electrical energy.
Chemical energy is energy stored in the bonds of chemical compounds (atoms and molecules). Batteries, biomass, petroleum, natural gas, and coal are examples of stored chemical energy.
Kinetic Energy Problem
A 2 kg mass moving at the speed of five meters per second has a kinetic energy of
k = 1/2mv^2
k = 1/2(2)(5)^2
k = 1(25)
k = 25 joules
Bernoulli’s equation states that the sum of the pressure, potential energy and kinetic energy per unit of volume of an incompressible and non-viscous fluid in a steady flow at any point along the pipe remains constant.
A skier at the top of a mountain: the skier begins at an elevated position, thus possessing a large quantity of potential energy. As the skier begins the descent down the hill, potential energy is lost and kinetic energy (i.e., energy of motion) is gained.
#hesi #hesia2 #hesia2exam #nursing #nursingexam #nursingschool #nursingstudent #futurenurse