physics

• state the si units for length, mass, time, speed and acceleration


  m, kg, s, m/s, m/s/s
• how to convert between km/h and m/s

  km/h to m/s divide, m/s to km/h multiply
• what is speed


  the rate that something travels in a given time
• what is velocity


  the distance covered by an object in unit of time
• speed, distance, time formulas


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• what is acceleration


  acceleration is the rate at which an object changes its speed over time
• calculating acceleration


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• calculating final speed


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• what is newton's first law?

  Newton's first law is the law of inertia. It states that "objects maintain a constant velocity and direction unless acted on by an unbalanced force. The greater the mass of an object the more inertia it has.
• state the types of friction

  sliding, rolling, fluid, static.
• what is net force?


  The net force of an object is defined as the sum of all the forces acting on an object. It is calculated by:

  
• how to calculate mass and weight

  use this formula

  
• what is Newton's third law?

  Newton's third law states that "for every action, there is an equal and opposite reaction" and is the law of action/reaction pairs"
• What is gravitational potential energy?


  Gravitational potential energy is the energy possessed by an object due to its position in a gravitational field. Objects are considered to have GPE when they are lifted above the ground.
• what is the GPE formula?


  GPE can be calculated by:

  
• what is kinetic energy?

  kinetic energy is the energy of motion
• what is the formula for calculating KE


  KE can be calculated by:

  
• What is the law of conservation of energy

  The law of conservation of energy states that energy is not created or destroyed, it is simply transformed from one type to another. These changes in energy forms are called conversions or transformations
• energy


  must be transferred in order for an object to do work or heat up.
• distance


  the measurement between two or more points
• speed


  the distance an object moves in a given time
• acceleration


  the change in speed over time
• displacement


  the distance in a given direction
• force


  something that changes the motion or produces motion of an object
• net force


  the sum of all the forces acting on an object
• velocity


  speed in a given direction
• mass


  the quantity of matter an object has
• weight


  the force of gravity acting upon an object
• friction


  the force that resists an objects motion when it is in contact with another surface