Subtopics
4Lessons
16Gravitational Potential Energy
Define gravitational potential energy and calculate it using Ep = mgh, including proportionalities, the reference point and energy conversions.
Kinetic Energy
Define kinetic energy and calculate it using Ek = 1/2 mv squared, including km/h to m/s conversions and the mass and velocity relationships.
Ep and Ek Calculations (Mixed Exercises)
Mixed exercises choosing between Ep = mgh and Ek = 1/2 mv squared, with truck, bike, grain, bullet and roller-coaster problems.
Mechanical Energy
Define mechanical energy as the sum of gravitational potential and kinetic energy, EM = Ek + Ep, and calculate it at different points of a motion.
Conservation of Mechanical Energy
State and apply the laws of conservation of energy and of mechanical energy in closed and open systems.
Principle of Conservation of Mechanical Energy
Apply Ek1 + Ep1 = Ek2 + Ep2 to pendulums, vertical motion, inclines and roller coasters.
Conservation of Mechanical Energy: Practical Demonstration
A pipe-and-marble practical investigation of the conversion between gravitational potential energy and kinetic energy.
Application of Conservation of Mechanical Energy: Calculations
Calculations applying Ek1 + Ep1 = Ek2 + Ep2 to cliffs, pendulums, rolling balls and roller coasters.