Physics

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Across
  1. 1. When the speed of an object remains the same - it does not increase or decrease.
  2. 3. State of rest or uniform motion in a straight line, unless that state is changed by an external force.
  3. 5. Force of attraction that exists between any two masses, any two bodies, any two particles.
  4. 6. are measured in base or physical fundamental units: length, mass, time, electric current temperature, amount of substance, and luminous intensity.
Down
  1. 2. usually said to be a physical quantity that only has magnitude, possibly a sign, and no other characteristics.
  2. 4. Force between two surfaces that are sliding, or trying to slide, across each other.