Target Practise

• 1. What is Ratchet Mechanism?

  • the mechanical device allows continuous linear/rotary motion in one direction
  • useful to limit machines to turn in one direction by locking and to prevent motion in the opposite direction
• Usage of a pawl and a ratchet

  • to get water from the well
• Law of Conservation of Energy

  Conservation of Energy/Momentum:

  • this is one of the most prevalent scientific principles in the study of Science/Physics related topics in the world
  • It states that :
  • Energy cannot be created nor destroyed
  • Total energy of an isolated system remains constant (conserved over time)
• Energy in - Potential Energy - Energy out
• Variables and Data Types:

  • In programming, a variable is a value that can change, depending on the information or conditions passed to the program.
  • Variables are used to store data, which can then be manipulated, and shared across the whole program.
  • Types of data that variable can store includes: string, number, boolean, array, etc.