Moderate

The SI unit of weight is:

Correct answer: D. Newton

  • A. Gram
  • B. Kilogram
  • C. Pound
  • D. Newton

Explanation

Weight is a force (mass × gravity) and its SI unit is the newton (N); gram and kilogram are mass units, pound is not SI.

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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.

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