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If the velocity of the body is decreasing, the acceleration is negative. The negative acceleration is known as:

Correct answer: E. Both A and B

  • A. Retardation
  • B. Deceleration
  • C. Negative displacement
  • D. Negative motion
  • E. Both A and B

Explanation

The negative of acceleration or decrease in acceleration is also known as deceleration or retardation.Hence option A,B and are true. So we will mark option E as the correct option.There is no term like negative motion in physics, hence option D is incorrect.

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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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