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Science L7 Work and Energy

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  • The formula for Kinetic energy is as follows: KE = 1/2 mass x velocity squared
    True
  • When the bow is released, where will the energy be transferred to? From the bow string to the arrow OR from the bow string into the bow
    From the bow string to the arrow
  • Is this the correct formula for potential energy? PE = mgv
    No , it is PE=mgh
  • The greater the mass of the object, the lower the gravitational potential energy. True or false
    False
  • What is potential energy? Is it energy waiting to be used OR energy busy being used
    Waiting to be used
  • Kinetic Energy is the energy of motion or energy in use. True or False
    True
  • At which point would the roller-coaster car have the greatest gravitational potential energy?
    A as the highest point
  • The product of distance and the force in the direction an object moves is called work. True OR false
    True
  • In this image, where would potential energy be for the rollercoaster car?
    A and C and D
  • What is energy? Is it the ability to cause change OR to bring stability
    Change
  • Potential energy due to compression or expansion of an elastic object is called _____________________.
    Elastic potential energy
  • What energy is being depicted in this image?
    Elastic potential energy
  • Name a type of potential energy.
    Gravitational, elastic and chemical energies
  • Potential energy stored within the chemical bonds of an object is called _______________.
    Chemical energy
  • In this image both the truck and the motorbike are travelling at the same speed. Which will have the greater kinetic energy and why?
    The truck as heavier. Mass affects Kinetic Energy
  • When is gravitational potential energy greater? At a higher or lower height
    Higher height
  • What energy is depicted in this image?
    Potential energy