Physics

• What is the difference between scalar and vector qualities?

  A scalar quantity has only magnitude, but no direction. Vector quantity has both magnitude and direction.
• What is the difference between distance and displacement?

  Distance is the length of the path taken by an object whereas displacement is the simply the distance between where the object started and where it ended up.
• What is distance?


  The length of the path taken
• What is displacement?


  the difference between where the object started and ended linearly, there is direction.
• what is the SI unit for acceleration

  m/s^2
• what is force measured in?

  N
• What is kinetic energy measured in?


  J
• What is gravitational potential energy measured in?


  J
• what is velocity measured in?

  m/s
• How to convert km/h to m/s

  divide by 3.6
• What does the gradient of speed/time graphs represent?

  acceleration
• What does the gradient of displacement/time graphs represent?

  velocity
• What is acceleration?


  The rate at which velocity changes
• When does positive acceleration occur?

  When velocity increases
• When does negative acceleration occur?

  When an object is slowing down.
• What does the gradient of a velocity/time graph represent?

  acceleration
• what does the area under a velocity-time graph represent?

  Displacement
• What is the acceleration due to gravity?

  9.8 m/s^2
• what is the acceleration due to gravity when something is thrown up?

  -9.8 m/s^2
• what is the acceleration due to gravity when something is thrown down

  ?

  9.8 m/s^2
• What is the effect of a force?

  acceleration
• What are the different types of forces?

  contact and non-contact forces
• What is newtons 1st law of motion?

  Objects will remain in constant motion or at rest unless acted upon by an unbalanced force
• What is newton's 2nd law of motion?

  F=ma
• What is newton's 3rd law of motion?

  For every action there is an equal and opposite reaction
• What is the law of conservation of energy?

  Energy cannot be created or destroyed, only transferred
• What is kinetic energy?

  energy of motion
• What is GPE?


  Gravitational Potential Energy- the energy in objects off the ground